The elastic waistband made of neoprene material. It is suit for women's body shaper, slimming training and other sports exercises. It is comfortable and so safe to use. This fiber waist shaper has strong elasticity. It's flexible and durable, as soft as plastic bones, not easily deformed.its great for both men and womenwaist trimming 360 effectThe elastic waistband made of neoprene material. It is suit for women's body shaper, slimming training and other sports exercises. It is comfortable and so safe to use. This fiber waist shaper has strong elasticity. It's flexible and durable, as soft as plastic bones, not easily deformed.its great for both men and womenwaist trimming 360 effectThe elastic waistband made of neoprene material. It is suit for women's body shaper, slimming training and other sports exercises. It is comfortable and so safe to use. This fiber waist shaper has strong elasticity. It's flexible and durable, as soft as plastic bones, not easily deformed.its great for both men and womenwaist trimming 360 effect