When youre working hard and putting in some serious effort keep your cool in nikes pro cool ss compression t shirtlight touchmade from a light mix of polyester and elastane the performance material is minimalist in design so theres no weighing you down as you build up a sweat focused on delivering a cool feeling during any activity you get to stay in peak performance for longercompression fitfor those of you new to compression wear or not exactly sure of the concept then quite simply i