A cycling baselayer sits directly against your skin and does the work that makes every other layer more effective. In cold conditions, it holds a thin layer of warm air against the body while wicking sweat away from the skin — wet skin loses heat fast, so moisture management isn't a comfort feature, it's a performance one. In milder conditions, a lighter baselayer keeps you dry on climbs and adds just enough warmth for descents. The right choice depends on the temperature range you're riding in: mesh or lightweight knit for spring and fall, heavier thermal constructions for sustained cold or winter riding.

RA Cycles carries 41 men's baselayer options spanning the full temperature range. Assos leads the collection with several tiers — from the GTO Spring/Fall Dermasensor for cool-weather days to the GTO Winter and Ultraz Winter Skin Layer for serious cold — each built around Assos's Dermasensor fabric technology for warmth-to-weight efficiency. Q36.5 rounds out the premium end with the Base Layer 5 Plus Long Sleeve Hoodie, engineered around the brand's Sensitive Concept for a baselayer that adapts to fluctuating body temperature across a long ride.

See the full men's cycling apparel collection at RA Cycles, or shop men's jerseys, cycling jackets, and women's baselayers.