Fend off brisk autumn chills with the Men's Long Sleeve Assos LS. skinFoilfall Base Layer. Made from a customized mix of yarns, this baselayer sits stealthily under your favorite jersey for moisture wicking insulation through all your fall maintenance miles. Assos steps away from traditional paneling construction with this baselayer and goes with a tubular, seamless design for maximum comfort without any uncomfortable constriction or seam pinches. This baselayer sits close to your skin to provide a smooth layer of light insulation free from bunching for clean lines as you roll down the road.