Craft Liner Shorts
Craft liner shorts are the hidden weapon in a smart cyclist's kit bag - the bit you don't see but absolutely feel after three hours in the saddle. Wear them under your baggies on a muddy Welsh trail centre loop, slip them beneath commuter trousers for the daily grind, or layer them under waterproof overtrousers when the Peak District decides to throw everything at you. The point is flexibility without sacrificing comfort.
Craft's Swedish-engineered approach centres on two things: a chamois that actually fits how you move, and fabrics that keep moisture off your skin rather than trapping it. The Infinity chamois pad system runs across the range, with different densities and profiles to suit everything from short sharp efforts to long days out. Wrap that in moisture-wicking mesh construction and recycled polyamide blends, and you've got a liner that works as hard on a muggy August climb as it does on a damp November commute.
They're also cut with flatlock seams and silicone leg grippers to stay put without digging in - no bunching, no riding up, no distraction. If saddle sore prevention is a priority (and it should be), this is where to start.
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Fabric Tech and How It Holds Up When Things Get Sweaty
Craft's Stay COOL mesh fabric technology is the backbone of the liner range, and it does exactly what it sounds like - pulls sweat away from your skin quickly so you're not sitting in a damp layer two climbs into a ride. That matters more than people give it credit for. Double-layering under baggy shorts in humid summer conditions creates a microclimate that standard fabrics struggle with; the Stay COOL mesh is engineered to ventilate actively rather than just passively exist.
The recycled polyamide and elastane blends Craft uses give the shorts a lightweight, stretchy feel that moves with you rather than against you. Polyamide is inherently quick-drying - useful when you're grinding out a multi-day bikepacking route and hand-washing kit in a pub sink. It also holds its shape better than cheaper synthetics after repeated washing, which means the chamois position stays consistent ride after ride rather than drifting around.
For UK riding specifically, breathability is often underrated because we assume we need warmth. But humid British summers - think a heavy South Downs climb in July - generate serious heat between layers. Getting the base layer right means the outer layer can do its job without turning into a sauna. If you're comparing options, Endura liner shorts and Fox liner shorts also tackle this layering problem well, but Craft's Scandinavian focus on moisture management gives their fabrics a particular edge in sustained output conditions.
The Infinity Pad System and Getting the Fit Right
Craft's Infinity chamois pad range is split broadly into performance and comfort profiles. The C3 chamois is aimed at active riders - road-to-trail crossover, gravel, MTB - where you want padding that supports without adding bulk. It's firmer, more anatomically shaped, and sits flatter against the saddle. The C4 chamois leans toward comfort over aggression: more foam volume, better suited to longer everyday rides or commuting where you're spending time on a less optimised saddle setup.
Fit is non-negotiable with liner shorts. The ergonomic fit has to be close - genuinely second-skin close - so the chamois pad doesn't shift position while you pedal. If there's any slack in the fabric, you'll feel it within twenty minutes. The silicone leg grippers at the hem are what keep everything anchored, and Craft's are wide enough to hold without leaving a red ridge around your thigh. Get the sizing right and you won't notice them; size up and the whole system stops working.
One thing worth knowing: liner shorts work on an ergonomic fit principle that's gender-specific. Men's and women's chamois pads differ in shape, sit point, and density - Craft's Craft men's liner shorts and Craft women's liner shorts are cut differently at the seat and through the hip. Don't assume a unisex option gives you the same result.
Looking for standalone road cycling shorts? Check out our Craft bib shorts. Prefer casual outer layers over the top? Browse Craft regular shorts for compatible options.
Layering These Into Your UK Riding Wardrobe
The beauty of a well-designed liner is how many situations it covers. In summer, pair Craft liner shorts under lightweight baggy shorts for trail riding - you get the freedom of movement and casual look of a baggy with the chamois support of a proper cycling short underneath. Most MTB baggies have enough internal volume that a snug liner sits cleanly without bunching the outer fabric.
Come winter, the same liner works under Craft cycling trousers or waterproof overtrousers without adding bulk at the knee - important when you're already layering Craft base layers up top and don't want to feel like you're pedalling through treacle. The quick-drying polyamide blend means even if you get soaked, the liner dries faster against your skin than a heavier bib short would.
For commuters, liner shorts under regular trousers are genuinely practical. You arrive, change the outer layer, and the liner does the hard work on the bike. Altura liner shorts are another solid option in this space if you want to compare commuter-focused cuts.
Wash care is straightforward but worth getting right. Wash at 30 degrees, skip the fabric softener entirely (it coats the moisture-wicking fibres and kills their effectiveness), and air dry rather than tumble drying. Heat degrades both the elastane in the fabric and the antibacterial treatment in the chamois. Take care of these basics and a quality liner lasts a long time. That's not small print - it's the difference between a pad that works at month six and one that's gone flat.
Craft Liner Shorts FAQs
Do you wear underwear under cycling liner shorts?
No - and this is one of those rules that actually matters. Liner shorts are cut to sit directly against your skin so the chamois pad can do its job: wicking sweat, reducing friction, and preventing saddle sores. Add a cotton layer underneath and you've undermined all three. Go commando; that's what they're designed for.
How tight should cycling liner shorts be?
Snug enough that the chamois doesn't move when you pedal - think compression layer rather than loose fit. If the fabric is bunching at the thigh or the pad is shifting around in the saddle, they're too big. They shouldn't restrict circulation or feel uncomfortable standing up, but they need to be genuinely close-fitting to work properly on the bike.
What is the difference between liner shorts and bib shorts?
Liner shorts are lightweight padded undershorts designed to be worn beneath baggies, trousers, or other outer layers - they're invisible kit. Bib shorts have shoulder straps, use thicker opaque Lycra, and are worn as the outer layer on their own. Different tools for different jobs; a liner gives you saddle comfort without the road-cyclist aesthetic.