Shorts and Knickers

GTO marks the pinnacle of the Total Comfort MILLE GT line - spiritual successor to the iconic CENTO and Campionissimo Bib Shorts. It features the plushest, most responsive and breathable ASSOS insert to date, wrapped in our new frictionless, wrinkle-free paneling. The GTO has two leg lengths: STANDARD and LONG (+3cm vs standard). BEHIND THE PRODUCT With large-muscle support, friction, and excessive pressure remaining critical issues on long-duration rides, GTO destroys conventional bib short construction formulas. We reversed stitch lines and radically reshaped the insert to eliminate friction and genital pressure, while providing matchless muscle support with tapered, wrinkle-free leg panels that mirror your personal physique.

The lightest, most breathable ASSOS bib shorts to date. Engineered specifically for full-gas efforts in the hottest conditions—indoors and out—the 120-gram SUPERLÉGER is built on our S9 platform using hyperlight textiles for unmatched stability and boosted ventilation. BEHIND THE PRODUCT To not only reduce weight, but also increase rider comfort and support during the hottest racing days and flat-out indoor training sessions. We reduced the number of seams and replaced current panels’ textiles with hyperlight, more breathable materials to further reduce friction and keep the leg muscles cooler and fresher, for longer durations.

The Premio Bibshort has been engineered to provide the ultimate in long-distance comfort and to be your favorite bibshort ever. That's a big claim, but there's a lot of development in this short to back it up. So let's take a tour of the short. The first thing you might notice is what's missing: the seams and multiple panels. We engineered a new fabric that changes depending on the needs over various parts of the body. The lower leg has a raw-cut leg ending and rubberized yarns to guarantee a flat grip to keep the leg in place. The fabric becomes lighter in the thigh, while the four-way stretch provides just the right amount of muscle support. In the pelvis area, the compression and support increase to keep the seat pad and everything else in place, and the fabric gets thicker to avoid any embarrassing transparency issues. With this magical fabric we don't need to stitch separate panels together, which ensures more comfort and a better fit, as well as a sleek, sophisticated look. The premium fabrics extend into the bib straps. The perforated back keeps you cool and the edge is bonded so you don't feel the thickness of a stitched edge. The elastic straps have just enough modulus (return) to hold your shorts securely in place without cutting in to your shoulders. The seat pad is our top-of-the-line Progetto X2 Air Seamless pad. It's actually two separate components: a soft, stretchy Skin Care Layer next to your skin, which has the sole purpose of preventing any rubbing on your skin, and, under that, the Cushioning Layer, which features two separate densities of foam along with breathable perforated gel inserts under the ischia bones and perineum. We've carried the less-is-more theme into the design, with minimalist laser-etched logos and subtle finishing. It looks as premium as it feels. You can tell that every component, every stitch, every detail has been obsessed over. You'll not find a better bibshort. - The premium all-conditions short - Gradient stretch woven fabric for the right support in the right place - Woven fabric weighs 30% less than comparable knit fabric - Perforated back bib panel with lie flat bib straps that don't bind at shoulders - Integrated gripper elastic at leg ending holds short in place without need for extra silicone grippers - Laser-etched logos with RossoCorsa at center back and black scorpion shadow logos at lower legs - Progetto X2 Air Seamless seat pad

The definitive bib shorts for competitive, committed cyclists from the company that originally defined the racing shorts genre—and continues to lead in driving it forward. The shorts combine textiles and technology in an interwoven network of wrapping compression, silky comfort, and tensile pre-load to keep everything from the leg panels to the insert securely in place.

Crafted with long ride comfort at the top of the list, we paired our all new Levitate PRO Chamois with luxurious Italian PRO Transfer fabric to create a bib short that you will choose for your most important rides. Just seven carefully engineered panels are used to minimize seaming for a perfect contour to your body. Wide, laser-cut bib straps provide a barely-there, yet supportive fit. And raw edge hems create a smooth transition from short to skin for a sleek, high-performance look and feel, with a printed silicone gripper to hold it securely in place even during hard efforts. FEATURES - Pedal to Zero™: Going by bike 16mi / 26km offsets the climate impact of this garment - Luxurious Italian PRO Transfer fabric balances compression for ultimate comfort - New Men's Levitate™ PRO Chamois pad with triple-density design delivers unmatched support - Seven-panel design minimizes seams and optimizes body-contouring fit - Laser-cut raw edge leg hem construction for seamless transition to skin - BioViz® reflective elements for low-light visibility - 10.5" inseam

Lightly insulated knickers for cool conditions and long-distance riding, with extended knee coverage and stormproof textiles. Updated with features to enhance stability, reduce seams, and improve support. The Knickers are updated with our race-inspired X-Frame bib design, which stabilizes the insert and body panels throughout the pedal motion and while cornering. The new model is also updated with our MILLE GT C2 insert, which adds 2mm of plush comfort for long rides maintaining form or building base miles for the coming season.

GTS marks the introduction of the second generation of MILLE—an all-new bib short that builds on the iconic GT shorts’ Total Comfort formula with its plush double-layer insert and a fatigue-reducing textile. Assos engineered it for committed riders looking for added comfort during training to everyday riders seeking maximum long-distance support.

Innovative evolution The Free Aero RC Bibshort is our top race short, which also means that it's insanely comfortable even if you never pin on a number. It's fair to say that we've been working on this short for the past 15 years. That's how long it's been since the original free aero race bibshort was first introduced, initially as our top-of-the-line race short. Since then it has won three Tours de France, three Gri d'Italia, one Vuelta, and San Remo, but it also became the best-selling product in the history of Castelli because, simply put, this is the short that does everything well. The concept is quite simple: start with the best pad we know how to make, surround it with a supportive short with good muscle compression, and then remove everything else that's not absolutely necessary. You feel free thanks to the reduced number of panels and the reduced number of seams. In fact, the short portion has just 5 panels compared to 10 in the previous generation. You feel free because of further refinements to the Progetto X2 air seamless seat pad. The two densities of foam plus the gel pads provide progressive damping, while the separate skincare layer is soft and stretchy to move with your skin. You feel free thanks to the most minimal bibs you've ever seen in a short, including open-weave straps for maximum airflow. But we reinforced the yoke so the straps stay in place and made the mesh back narrow for coverage that is minimal yet just enough to hold the shorts in place. And the bib elegantly frames a convenient pocket at the center back. You feel free because this is the first high-end short that doesn't need any sort of gripper or elastic at the end of the leg to keep the leg in place. Getting this right meant 28 prototypes and our most extensive test program ever, and it results in the most comfortable leg ending we've ever made. The Forza 2 fabric has 32% lycra with a high modulus for exceptional muscle support and just the right amount of compression. There's reflective piping on the back. And all logos are either stitched or embossed for durability. - High-compression 215g Forza 2 fabric with 32% lycra content provides exceptional muscle support and compression - Progetto X2 air seamless seat pad is soft against the skin but well padded for long-distance comfort - Minimalist bib straps allow maximum airflow, while a reinforced yoke keeps the straps flat over the shoulders - Rear mesh pocket - 5-panel construction for reduced seams and less chafing - Sublimation-printed graphic and logos that will never peel, crack, or fade - Reflective piping on back of legs - Soft waistband with raw-cut edge panels for extra stretch and comfort - Raw-cut leg ending engineered to stay put without silicone grippers

The entry into our Race Series, EQUIPE R combines technology from the EQUIPE RS system with simplified, everyday utility. BEHIND THE PRODUCT The EQUIPE R is built with our signature A-Lock Engineering construction that adapts technologies from the WorldTour-proven EQUIPE RS. It maintains racingFit stability with a muscle-wrapping butterfly panel and the new Type.443 textile, which compresses and breathes like the EQUIPE RS, but with a deeper black color. Monofilament elastic in the bib straps reduces weight and dries faster than dual-layer models, and the shorts are equipped with our core racing insert. Construction/Fit: Our racingFit is a second-skin, aerodynamic silhouette designed with WorldTour feedback and proven with WorldTour results. Micro-adjusted shaping wraps the large muscles with compressive support in a standard leg length. X-Frame: A-Frame suspension inherited from the Equipe RS line. Limits sag on the lower back, stabilizing the insert and main body panel during high-intensity riding. Shock-Absorb Damping Mono9: Compressive foam materials in a breathable 9mm racing platform. Thermoformed shaping reduces ridges and irritation.

Innovative evolution The free aero RC bibshort is our top race short, which also means that it's insanely comfortable even if you never pin on a number. It's fair to say that we've been working on this short for the past 15 years. That's how long it's been since the original free aero race bibshort was first introduced, initially as our top-of-the-line race short. Since then it has won three Tours de France, three Giri d'Italia, one Vuelta and San Remo, but it also became the best-selling product in the history of Castelli because simply put, this is the short that does everything well. The concept is quite simple: start with the best pad we know how to make, surround it with a supportive short with good muscle compression, and then remove everything else that's not absolutely necessary. You feel free thanks to the reduced number of panels and the reduced number of seams. In fact, the short portion has just 5 panels compared to 10 in the previous generation. You feel free because of further refinements to the Progetto X2 air seamless seat pad. The two densities of foam plus the gel pads provide progressive damping, while the separate skincare layer is soft and stretchy to move with your skin. You feel free thanks to the most minimal bibs you've ever seen in a short, including open-weave straps for maximum airflow. But we reinforced the yoke so the straps stay in place and made the mesh back narrow for coverage that is minimal yet just enough to hold the shorts in place. And the bib elegantly frames a convenient pocket at the center back. You feel free because this is the first high-end short that doesn't need any sort of gripper or elastic at the end of the leg to keep the leg in place. Getting this right meant 28 prototypes and our most extensive test program ever, and it results in the most comfortable leg ending we've ever made. The Forza 2 fabric has 32% lycra with a high modulus for exceptional muscle support and just the right amount of compression. There's reflective piping on the back. And all logos are either stitched or embossed for durability. - High-compression 215g Forza 2 fabric with 32% lycra content provides exceptional muscle support and compression - Progetto x2 air seamless seat pad is soft against the skin but well padded for long-distance comfort - Minimalist bib straps allow maximum airflow, while a reinforced yoke keeps the straps flat over the shoulders - Rear mesh pocket - 5-panel construction for reduced seams and less chafing

Meticulous Evolution The Free Aero Race 4 Bibshort is our top race short, which also means that it's insanely comfortable even if you never pin on a number. The original Free Aero Race Bibshort was first introduced over a decade ago and has logged literally millions of kilometers under the backsides of our sponsored pro riders and has been the best-selling short both in the Castelli retail collection and in our Servizio Corse custom program. Over this time the short has undergone numerous updates and improvements in the never-ending quest to create the best short we can make. While the basic concept of a minimalist workhorse pro-level comfortable race short remains, every single fabric, component, stitch and construction method has been updated and improved over time. The fourth major generation of the short features the updated Progetto X2 Air Seamless seat pad. This pad separates a soft, stretchy skin care layer that moves with your body from a generously padded cushioning layer that replicates the form of your saddle. Eight-hour rides are no problem. Of course the fabrics are premium, made to our specifications by Italy's best fabric suppliers. The Forza fabric on the inner leg features 38% Lycra content for perfect fit, while the Vortex fabric on the side panels is dimpled for aerodynamics. And it's held in place by the latest iteration of our seamless flat Giro leg gripper. - Vortex dimpled fabric on legs for aero performance - Forza fabric on inner legs with 38% Lycra content for perfect fit - Stripe mesh engineered minimalist bib construction keeps you cool - Giro4 leg gripper elastic for better grip distributed over larger area - Doppio V construction in front for increased support and comfort - Flat-lock stitching - Progetto X2 Air Seamless seat pad - 15°-35°C / 59°-95°F - Weight: 172g

- Vortex dimpled fabric on legs for aero performance - Forza fabric on inner legs with 38% Lycra content for perfect fit - Stripe mesh engineered lie-flat bib strap construction keeps you cool - GIRO4 leg gripper elastic for better grip distributed over larger area - Doppio V construction in front for increased comfort - Flat-lock stitching - Progetto X2 Air Seamless Donna women’s-specific seat pad

Tough and durable mountain bike pants Wear the Defend Fire Pants on your next absolute scorcher of a run and feel what it’s like to ride in pants that have been tested on the world’s toughest trails by our pro mountain bike athletes. The slim silhouette and tapered lower leg provide a race-ready fit, which reduces snags and drag, and the proven race rachet closure keeps them snug while making fit easily adjustable on the fly. With a run as hot as yours, you’ll also be grateful for the breathable, Polartec Alpha insulation to keep you cool—no need to keep removing or adding layers as you shred—while the DWR finish sheds moisture, dirt, and debris like a champ. To keep you riding in cooler conditions, the Defend Fire Pants also features a fleece lining with stretch ripstop fabric so you can keep on ripping when the conditions gets tough. - Polartec Alpha insulation features adaptable breathability to help eliminate the need of shedding or adding layers while on the move - Proven race ratchet closure provides secure fit and quick on-the-fly adjustments - Secure zip hand pockets - Tapered lower leg reduces snag and drag - TruDri fabrics move sweat away from body to keep you dry - DWR finish sheds moisture, dirt, and debris - 86% polyester, 9% polyamide nylon, 5% elastane

Developed with Fabian Cancellara for endurance road cycling with maximum support and ultimate comfort. Built for the long haul, technologies like low force elastic and flatlock seams ensure this short stays in place no matter how long you ride. - Inseam length 23cm / 9-inches - EXPERT LONG DISTANCE seat insert with GORE WINDSTOPPER Cup - Developed with Fabian Cancellara - Dense knit construction creates ultra soft next to skin feel to reduce chafing opaque finish - Central torso architecture keeps chamois in place - Wide and flat bibs with highly breathable material keeps short in place - Ultra-fine gauge, super stretch, durable performance with abrasion resistance - Three-point chamois anchoring system means you will never have to readjust your short while riding - Silicone leg grippers create snug fit at thigh without restricting movement - Reflective details on all sides for 360-degree visibility - Radio pocket on rear of bib - Opaque finish fabric is ultra wicking and fast drying GORE WINDSTOPPER Cup Technology: highly breathable, preformed windproof front for optimum comfort - Flatlock seams all around to create maximum comfort

Our top-selling Sorpasso Bibtight is also available in a 3/4-length version for those cool but not quite cold rides or for those of you who just like the feeling of not covering your lower leg. The fabrics are exceptionally soft, stretchy, and warm, with our Nano Flex 3G covering most of the body and panels of Nano Flex Xtra Dry covering the front, thighs, and center back. We've added reflective panels for safety and given it the most comfortable seat pad and bib strap construction we can. - Nano Flex 3G fabric for our best mix of warmth, stretchy compression, softness and water repellency - Nano Flex Xtra Dry fabric panel on upper front and thighs for extra warmth, and on back to protect from road spray - Anatomic cut to hips and knee - Lie-flat elastic bib straps

The perfect apparel for the perfect ride, that's what our Prime Series apparel is all about. The best fabrics, constructions, and technologies go into these pieces, and the Men's Prime Bib Shorts are no exception. Starting with the uppers, the open suspender design keeps the bibs right where you want them, without constricting any upper body movements. The suspender fabric is also extremely soft and plush, eliminating any shoulder discomfort or irritation, yet we've still built in a HookUp magnetic bib connection making nature breaks much easier. The pre-molded, triple-density foam Body Geometry Contour 3D Chamois is contoured to perfectly match the curvature of your body, all while being soft and supportive in all the right places. With the Prime Bib Shorts, you're sure to embrace the "chamois time is training time" motto as they're so comfortable, you won't want to take them off. - Open suspender construction keeps the bibs in place without constricting the upper body. - Stretchy elastic suspenders are extremely plush and soft against the skin. - Silicone-infused fabric cuff provides a gentle, secure hold on the legs to ensure a shift-free fit. - Fabric Content: MAIN: Knit 46% Polyamide, 38% Polyester, 16% Elastane - UPPER: 90% Polyester, 10% Elastane

Crafted with long ride comfort at the top of the list, we paired our all new Levitate PRO Chamois with luxurious Italian PRO Transfer fabric to create a premium short that you will choose for your most important rides. Just seven carefully engineered panels are used to minimize seaming for a perfect contour to your body. And raw edge hems create a smooth transition from short to skin for a sleek, high-performance look and feel, while a printed silicone gripper holds them securely in place even during hard efforts. FEATURES - Pedal to Zero™: Going by bike 16mi / 25km offsets the climate impact of this garment - Luxurious Italian PRO Transfer fabric provides balanced compression for ultimate comfort - New Men's Levitate™ PRO Chamois pad with triple-density design delivers unmatched support - Wide waistband provides support without feeling constrictive - Seven-panel design minimizes seams and maximizes body-contouring fit - Laser-cut raw edge leg hem construction for seamless transition to skin - BioViz® reflective elements for low-light visibility - 10.5" inseam

The MILLE GT is designed specifically for long training rides and endurance cycling, but it’s appropriate for every ride, every day, every time you’re in the saddle. Assos took this generational redesign as an opportunity to make the MILLE GT better at the things everyone loved about its predecessor, including the premium X-frame suspension carriage, a refined comfort waist fit, and a reduction in seams and weight (28% and 5g, respectively). The insert also got some attention, inheriting the increased ventilation of the GTS/GTO models and receiving 3mm of additional cushioning.

A new bib short platform for committed daily riding, whether that’s dedicated training regimens, the weekly crit series, or weekend centuries.

Adventure-ready gravel bibshorts with additional cargo-carrying capacity - Super-stretch woven main body fabrics for improved durability - Double-layered side leg panels to reduce potential gravel rash from unexpected spills - Mesh cargo pockets on the thighs and additional mesh storage on the side waist - Lumbar support panels and power straps derived from Endura's class-beating PRO SL Bibshort - 600 Series pad II, utilizing Endura's proprietary computer-cut‚ Continuously Variable Profile (CVP) stretch technology and gel inserts for superior vibration damping and support - Silicone gripper detail to help prevent an over-short riding down or your jersey riding up

Bib shorts for summer riding

Crafted with long ride comfort at the top of the list, Pearl Izumi paired their most supportive and breathable P.R.O. Escape 1:1® Chamois with luxurious Italian P.R.O. Transfer fabric, to create a short that you will choose for your most important rides. Just seven carefully engineered panels are used to minimize seaming for a perfect contour to your body. The raw edge hems create a smooth transition from short to skin for a sleek, high performance look and feel, with a printed silicone gripper to hold it securely in place even during hard efforts. Features: - Luxurious Italian P.R.O. Transfer fabric provides balanced compression for ultimate comfort - P.R.O. Escape 1:1 Chamois with floating top sheet design delivers unmatched comfort - Seven panel design to minimize seams and provide maximize body contour - Laser cut leg openings with silicone leg grippers for a seamless transition to skin - BioViz reflective elements for low-light visibility - 10.5" inseam

The GORE Force Bib Shorts+ are your new favorite bib shorts, in our most popular fabric, engineered for the perfect fit. - Full mesh bib construction for optimum fit and breathability - Quick drying material - Overlock seams add durability and minimise chafing - Silicone grip inside leg hem create snug fit without restricting movement - Raw cut hem at legs - Central torso architecture keeps chamois in place - ADVANCED High Vent seat insert with GORE® WINDSTOPPER® Cup - Radio pocket at back - Reflective logo - Inseam length 22.5 cm / 8.8 inches

Crafted with long ride comfort at the top of the list, Pearl Izumi paired their most supportive and breathable P.R.O. Escape 1:1 Chamois with luxurious Italian P.R.O. Transfer fabric, to create a bib short that you will choose for your most important rides. Just seven carefully engineered panels are used to minimize seaming for a perfect contour to your body. Wide, laser-cut bib straps eliminate the need for additional binding for a barely there, yet supportive fit. The raw edge hems create a smooth transition from short to skin for a sleek, high performance look and feel, with a printed silicone gripper to hold it securely in place even during hard efforts. Features: - Luxurious Italian P.R.O. Transfer fabric provides balanced compression for ultimate comfort - P.R.O. Escape 1:1 Chamois with floating top sheet design delivers unmatched comfort - Seven panel design minimizes seams and maximizes body-contouring fit - Laser-cut leg openings with silicone leg grippers for a seamless transition to skin - Laser-cut bib straps provide superior next to skin comfort and a low profile feel - BioViz reflective elements for low-light visibility - 10.5" inseam

We made this 3/4 tight for those days when shorts aren't enough, but for which tights would be overkill, protecting your knees and providing full calf coverage. Our improved Thermal fleece fabric provides quick-drying insulation, while fewer panels and reduced seaming combine with a stretchier fabric to improve both fit and comfort. We add full PI Dry water-shedding technology to ward off splashes and light rain. Raw-edge bib straps eliminate bulk and improve comfort. Our plush ELITE Escape chamois provides reliable comfort for longer rides. - Ultra-soft Thermal fleece fabric for pedaling comfort and thermal regulation - Made with recycled material - PI Dry technology for permanent water-shedding performance - ELITE Escape 1:1 Chamois with floating top-sheet design reduces friction for all-day comfort - BioViz reflective elements for low-light visibility - Lower Panel: 56% nylon, 30% polyester, 14% Lycra elastane - Upper Panel: 75% nylon, 25% elastane - Made in Vietnam - Type: Thermal - Reflectivity: Low-light visibility

The main story of this short is the use of Castelli's renowned top-of-the-line Progetto X2 Air Seamless seat pad in an otherwise traditional short, but in fact every little detail has been obsessed over to ensure your comfort on your next long endurance ride. A great pad is useless without great fit. The seams are placed around the hip area to create a perfect shape on the bike. The Endurance Evolution fabric has a soft hand while providing good compression and excellent moisture management. And it's all held in place with the amazingly comfortable GIRO3 leg gripper. This short offers exceptional value and is ready to deliver lasting comfort on your longest rides.

The main story of this short is the use of our renowned top-of-the-line Progetto X2 Air Seamless seat pad in an otherwise traditional short, but in fact every little detail has been obsessed over to ensure your comfort on your next long endurance ride. A great pad is useless without great fit. The seams are placed around the hip area to create a perfect shape on the bike. The Endurance Evolution fabric has a soft hand while providing good compression and excellent moisture management. And it's all held in place with the amazingly comfortable GIRO3 leg gripper. This short offers exceptional value and is ready to deliver lasting comfort on your longest rides. - Endurance Evolution fabric provides optimum muscle support and feels drier in nearly all conditions - Anatomic cut for perfect on-bike fit - Mesh bib straps and back to keep you cooler - Progetto X2 Air Seamless seat pad for even greater comfort and improved airflow - GIRO3 leg grippers lie flat

The main story of this short is the use of our renowned top-of-the-line progetto x2 air donna seamless seat pad in a mostly traditional short, but in fact every little detail has been obsessed over to ensure your comfort on your next long endurance ride. A great pad is useless without great fit. The seams are placed around the hip area to create a perfect shape on the bike. The endurance evolution fabric has a soft hand while providing good compression and excellent moisture management. And it's all held in place with the amazingly comfortable giro3 leg gripper. On your long endurance rides you'll especially appreciate Castelli's drop-tail bib construction. The wider bib straps are free-floating so you can cross them in front or back. They pull tight enough to keep your shorts in place, but when the need arises they stretch long enough that you can take a bathroom break without having to remove your jersey and bibs. This short offers exceptional value and is ready to deliver lasting comfort on your longest rides. - Endurance evolution fabric provides optimum muscle support and feels drier in nearly all conditions - Anatomic cut for perfect on-bike fit - Bib straps can cross in front or back and are extra elastic, allowing short to be pulled down for pee stops without removing bibs - Women's-specific progetto x2 air donna seamless seat pad for even greater comfort and improved airflow - Giro3 leg grippers lie flat

We’ve amplified the performance of the iconic Attack range with premium features that make a big difference during hot weather riding. Constructed from a lightweight, breathable 4-way stretch fabric, these bibs were made for high output efforts. Our new multi-density Levitate™ Plus chamois provides fine-tuned support hours in, so you can chase big objectives in comfort. Sleek detailing like raw-edge bib uppers, laser cut leg openings with silicone-printed grippers, and perforated venting on the lower back give these bibs an edge to take your riding to the next level. FEATURES -Pedal to Zero: Going by bike 18.13mi offsets the climate impact of this garment -New multi-density Levitate™ Plus Chamois pad delivers unmatched comfort -Laser cut bib straps for superior next-to-skin comfort -BioViz® reflective elements for low light visibility -Made from recycled materials -10.5” inseam

The bib-free Zero-Pressure waist embodies Assos' C2 AEPD click-fit ethos with a secure hold on the sides and back, and a panel insert on the front stretches to accommodate aggressive positioning on the bike and deep breathing during hard efforts. The updated insert inherited increased ventilation from the premium models, and 3mm of additional thickness increase long-ride comfort.