Hot Chillys Women's Clima-Tek Crewneck Base Layer Shirt - This new Clima-Tek fabric features a buttery soft, cottony hand, with all the performance of a polyester spandex. Perfect for summer camping in the mountains and winter wear anywhere. Spun polyester has an exceptionally soft hand and feel Four way stretch for unlimited movement Relaxed fit for casual or performance wear Activated carbon enhances thermal regulation and odor blocking properties Moisture transfer fibers move moisture away from skin to keep you dry Comfort hidden thumbhole loops UPF 30 protection 86% polyester 14% spandex Style: HC5608