HEROSKY Sauna Sweat Suits Waist Trainer Vests Weight Loss Shapewear Slim Belt Mens Neoprene Slimming Vest Workout Suit Material:80%Neoprene+20%Nylon Increases sweating Helps quicken weight loss Can be used for yoga and kick boxing, postpartum belly abdomen corset etc. Utilizes the body's natural heat to help trim off inches