Not a gram too much.The Aenergy Light Half Zip Pullover is designed for mountaineering and ski touring all year round.Depending on the outside temperature and level of exertion, you can wear it as either a base or mid layer.It is made from very lightweight Polartec® Power Grid™ material, which keeps you warm, is elasticated and has a waffle structure on the inside that efficiently wicks moisture to the outside.The half-length zipper allows easier ventilation and lets you quickly slip the pullover on or off.Flat seams reduce unpleasant pressure points for even greater comfort.The Aenergy Light Half Zip Pull:our lightest mid-layer for ambitious mountain sports enthusiasts. Compare prices from: Mammut in Woman's Sportswear