Specialized Seamless Base layer SSThe Specialized Seamless Base layer SS is a short-sleeved base layer that is ideal as a bottom-layer on cold days and works as a single-layer on hotter days. Made with a blend of polypropylene, polyamide and elastane, the Seamless Base layer SS is soft, comfortable and stretchy. Synthetic yarns give this garment a soft-feel and also help to absorb moisture form your body to keep you comfortable while on the bike. Features Synthetic yarns have a soft feel and move moisture away from the skin Seamless construction Slim fit SPECIFICATIONSMaterial58% Polypropilene, 37% Polyamide, 5% Elastane Sleeve Length Short Closure Type None Fit Slim Intended Use Road Sizing Size Small/ Medium Large/ Extra Large Chest35-40. 5"41-47. 5"Waist28-34"34-39" | Specialized | Seamless Baselayer Ss Men's | Size Large/extra Large In Grey | Polyamide/elastane