RaceX Classic Wind Boxer M is the perfect hybrid baselayer for cross activity, especially made for windy and cold conditions.Constructed with a front thigh body outer layer that are wind resistant and has a moisture-wicking function to prevent chill down in higher speed. Designed to prevent chill down at higher speeds and make your workout even more enjoyable. It's made with 70% Repreve performance fiber made from recycled plastic bottles. The plastic bottles are collected within 50 km of coastlines in countries or areas that lack formal waste or recycling systems. Front thigh is wind resistant and has a moisture-wicking function It is constructed with a gusset at crotch area for better movement Soft elastic waistband for comfort Weight 110 g Size and Fit Fit: Slim Materials Main Fabric: Repreve Fabric Materials: 70 % recycled polyester, 30 % polyester