Warm, stretch-fleece base layer bottoms for the coldest conditions.Getting your layers right starts at the base. The stretch fleece of the Rho SV Bottom provides a soft next-to-skin feel that won’t cause chafing. Made with a lightweight knit designed to minimize shedding and provide an exceptional warmth-to-weight ratio, this base layer keeps you from feeling constricted or cold, whether you’re riding lift-accessed terrain or ascending windy ridgelines.