Mammut Snow ML 1/2 Zip Top - Women's: The Snow ML Half Zip Pull Women is a brushed, soft mid-layer. It dries quickly and its antimicrobial treatment prevents unpleasant odors. Flatlock seams prevent chafing and keep the mid-layer elastic, even in the seam. FEATURES UV protection (UPF)UPF 50+ MATERIAL & TECHNOLOGY Main material 79% Polyester | 21% Spandex