Craft Sportswear Men's Cool Concept Piece Short Sleeve Base Layer Top: sport/bike/ski/run/sun/protection/top 91% Polyester 9% Elastene Imported Concept that merges bodymapping with sport-specific fit solutions Moving Wing Technology for total freedom of movement Bodymapped Mesh Superlight and Cool fabric take you to the next level Soft, lightweight and cooling fabrics comfort you body where you need it UPF 50+ Sun Protection