Mountain bike cycling shorts

MTB cycling shorts protect your seat on cross-country trails: their chamois pad absorbs vibration and limits friction against the saddle. Mavic mountain bike cycling shorts for men and women cover rides from up to 3 hours to 7 hours and more, and every women's model has a chamois pad shaped for the female body. 


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MTB cycling shorts for men and women: which for XC?

For men's or women's cross-country shorts, look first at the chamois pad: ErgoEssential up to 3 hours, ErgoContact up to 7 hours, ErgoEndurance for 7 hours and more. 

Under UCI rules, an elite XCO World Cup race lasts 80 to 100 minutes, well within the 3 hours of the ErgoEssential pad. Our guide explains how to choose cycling shorts in detail. 

For each Mavic model, check the pad first, then the cut and the fabric. 

ModelCutFabricChamois padRide length shown
Aksium Short MenShorts, waistbandStretchErgoEssentialUp to 3 h
Aksium Bib Short MenBib shortsStretchErgoEssentialUp to 3 h
Ksyrium Bib Short MenBib shortsStretchErgoEndurance7 h+
Cosmic Pro Bib Short MenBib shorts, X-shaped strapsCompressiveErgoContactUp to 7 h
Cosmic Ultimate Bib Short MenBib shorts, longer inseamSupportive, lightweightErgoContactUp to 7 h
Allroad Cargo Bib Short MenBib shorts, 2 pocketsCompressiveErgoEndurance7 h+
Cosmic Thermo Bib Short MenBib shortsSuperroubaixErgoContactUp to 7 h
Aksium Thermo Bib Tight MenBib tightsFleeceErgoEssentialUp to 3 h
Ksyrium Thermo Bib Tight MenBib tightsSuperroubaixErgoEndurance7 h+
Cosmic Thermo Bib Tight MenBib tightsSuperroubaixErgoContactUp to 7 h
Aksium Short WomenShorts, waistbandStretchWomen's ErgoEssentialUp to 3 h
Aksium Bib Short WomenBib shortsStretchWomen's ErgoEssentialUp to 3 h
Cosmic Bib Short WomenBib shortsStretchWomen's ErgoContactUp to 7 h
Aksium Knicker WomenThree-quarter lengthStretchWomen's ErgoEssentialUp to 3 h
Aksium Thermo Tight WomenTightsFleeceWomen's ErgoEssentialUp to 3 h
Aksium Thermo Bib Tight WomenBib tightsFleeceWomen's ErgoEssentialUp to 3 h
Cosmic Thermo Bib Tight WomenBib tightsSuperroubaixWomen's ErgoContactUp to 7 h

 

XC shorts: position, attacks and riding out of the saddle

In cross-country, you slide onto the nose of the saddle on steep climbs and attack out of the saddle, so your XC bib shorts must follow you without riding up your thighs. 

The ErgoEssential and ErgoContact pads of the Aksium and Cosmic models are shaped so you forget them out of the saddle. When you accelerate, MTB shoes with cleats keep your foot locked to the pedal. 

On a singletrack, a bramble or a slide can scuff your shorts: the Cosmic Pro, Cosmic Ultimate and Allroad Cargo Bib Short Men use an abrasion-resistant fabric. 

MTB bib shorts for riding out of the saddle

Bib shorts stay put when you ride standing, even under MTB shorts: the straps hold the pad without squeezing your waist. 

Waistband shorts: Aksium Short for men and women

The Aksium Short Men and Aksium Short Women have no straps and stay in place with a waistband across the abdomen. The Aksium Short Women has a short 20 cm inseam for more freedom of movement. 

Chamois pad: shocks, vibration and friction on the trail

The chamois pad in your shorts absorbs vibration from roots and rock gardens when you pedal seated on a rough trail, and reduces friction against the saddle. 

On a hardtail, with no rear suspension, root impacts travel through the cross-country mountain bike wheels and the frame straight to the saddle. 

The four-layer ErgoEndurance pad of the Ksyrium and Allroad Cargo models, with its OrthoLite insert, spreads pressure evenly and absorbs vibration; on the Ksyrium Bib Short Men and Allroad Cargo Bib Short Men, it also suits riders over 75 kg. To avoid pressure points, the Cosmic Ultimate Bib Short Men has a seamless construction. 

Long-distance MTB and XCM marathon: which pad?

For an XCM marathon, between 60 and 160 km under UCI rules, choose an ErgoContact pad, made for rides up to 7 hours, or an ErgoEndurance pad, made for 7 hours and more. 

By the fifth hour in the saddle, pad quality matters far more than on a short after-work loop. The compressive fabric of the Cosmic Pro Bib Short Men supports your muscles to limit fatigue over the distance. 

To refuel without a backpack, the Allroad Cargo Bib Short Men has two side pockets for your phone and race food. 

Winter bib tights for cold rides and muddy trails

Long bib tights keep your legs warm: fleece Aksium Thermo models for rides under 15 °C, Superroubaix Ksyrium Thermo and Cosmic Thermo tights for winter. 

On waterlogged trails in January, the DWR treatment of the Ksyrium Thermo and Cosmic Thermo models keeps splashes and light rain off your legs. 

In spring and autumn, the Aksium Knicker Women (10 to 20 °C) and the Cosmic Thermo Bib Short Men suit chilly mornings. On top, layer up with a long-sleeved MTB jersey, then a windproof jacket over it, depending on the temperature. 

For cross-country shorts, foam suits you better than gel once your rides last several hours, because it supports the pelvis better over time. Gel is better kept for short rides and beginners. For a marathon, look at the density and quality of the foam rather than its thickness. The ErgoEssential pad of the Aksium shorts combines two foam densities for progressive cushioning on rides of up to 3 hours. For longer rides, the ErgoContact and ErgoEndurance pads use three or four layers with an OrthoLite insert.

The size of Mavic cycling shorts for mountain biking comes from your waist and hip measurements. Men's shorts run from S, for a waist of 76 to 80 cm and hips of 90 to 94 cm, to 2XL, for 97 to 102 cm and 111 to 116 cm. Women's shorts run from XS, for 61 to 64 cm and 89 to 92 cm, to XL, for 82 to 87 cm and 110 to 115 cm. When you try them on, lean forward into a pedalling position: the chamois pad should stay in place without creasing. Shorts that are too big ride up your thighs, and the pad moves and rubs.

The 7 women's cycling shorts from Mavic have a chamois pad shaped for the female body: women's ErgoEssential on the Aksium models, women's ErgoContact on the Cosmic models. For an XCO race in hot weather, the Aksium Bib Short Women has a breathable back panel designed for women. For long rides, the Cosmic Bib Short Women pairs a women's ErgoContact pad, made for up to 7 hours, with an ergonomic bib that holds the shorts in place without uncomfortable pressure. For winter, you can choose between the Aksium Thermo Tight Women, the Aksium Thermo Bib Tight Women and the Cosmic Thermo Bib Tight Women, and the Aksium Knicker Women suits spring and autumn. Women's shorts come in XS to XL.

With XC bib shorts, wear a close-fitting, breathable jersey, gloves, a helmet and MTB shoes with cleats, and add a windproof layer as soon as the temperature drops. A breathable jersey wicks away sweat on the climbs. Gloves protect your palms from blisters and grazes in a crash. With cleated shoes, your foot stays locked to the pedal when you accelerate and over roots. In cool weather, a light windproof jacket goes over the jersey.

After a muddy ride, wash your cycling shorts as soon as you get home: rinse off most of the mud with water, then machine wash them at 30 °C at most. Use a mild detergent, without bleach or fabric softener. Choose a delicate cycle with a gentle spin. Let them dry in the air, out of the sun, away from a radiator and without a tumble dryer, because the elastane in the fabric does not cope well with heat. The care label always comes before this advice.

Mavic cycling shorts are covered by Mavic for 2 years from the date of purchase, from Mavic or an authorised retailer, against defects in material or workmanship. The warranty benefits the original purchaser, and a defective product is repaired or replaced. Normal wear and tear, improper use or maintenance, and damage from a fall or an impact are not covered. To make a claim, take the shorts and the invoice, or another proof of purchase, to your nearest authorised Mavic retailer. The full conditions, including the countries where the warranty applies, are set out in the warranty policy on mavic.com.