This product is made of top graded closed cell neoprene, laminated with black jersey on the top layer. CVC on the inner layer. Neoprene can retain bodily heat and increase perspiration so that it can produce sauna effect. CVC has better absorbency and helps protect sensitive skin against skin allergy after sweating. This product is designed to slim down lower part of body by burning up the excess fat and allows free movement with elastic materials.