The Mammut Taiss light is a medium strength 4-way stretch mid layer that is designed to ensure maximum comfort and freedom of movment for all your days spent exploring the mountains. Ideal for anytime of year, this mid layer is great on its own, or as an added layer of warmth under your ski jacket. The athletic fit ensures an effcient fit, while the flat seam design helps to avoiding chaffing when you're wearing a back pack. The robust fabric dries wicked fast when wet, while the regulated moisture-wicking prevents rapid overcooling.