CLSL TM-P16-NVCZ_Medium Tesla Men's Compression Pants Baselayer Cool Dry Sports Tights Leggings P16 We strongly recommend ordering ONE size up what you normally wear. Gear designed for all seasons (Releases heat and wicks moisture with a cooling effect) 87% Polyester-13% Spandex Non abrasion fabric material with excellent elasticity and durability Moisture Sensing/Quick time Dry/TWO-WAY Air Circulation.