Sauna Sweat Suit Nylon for heavy duty workouts. Designed for Men and Women Durable and Hardwearing 100% Nylon Sweat Suit Waterproof Increases Metabolism and Calorie Burning to Lose Weight quickly Sweat Suit is made with 100% Nylon to ensure it's hardwearing and will not rip easily like the cheap plastic sauna suit's All seams are extra strengthened and double stitched to ensure maximum durability.