Under Armour HeatGear Armour is the original UA performance baselayer—the one you put on first and take off last. So it is made extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it. Features: Our original HeatGear fabric is super-light, breathable & dries fast Stretch-mesh gusset & inseam panels deliver strategic ventilation Updated ergonomic design keeps seams off high abrasion areas & increases durability 4-way stretch material moves better in every direction Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Wider, 2" Engineered elastic waistband Compression: Ultra-tight, second-skin fit. Machine Wash. Fabric: 87% polyester/13% Elastene In Large these tights measure 15 inches across at the waist (unstretched,) 36 inches long, has a 12 inch rise, 29 inch inseam, and measure 4 inches across at the leg opening. (All measurements are handmade and approximate on unstretched material.)