Waist Trainer is designed according to ergonomic principles to help adjust the body fat distribution, shape the graceful curve of the body, also can effectivly help adjust the breast, waist and legs to make a woman more sexy and beautiful, just enjoy it and shape your sexy body to be more perfect in a second! Only hand washing , No Iron/No Machine Washing/ No Chlorine bleaching / Onesize(Medium) & L Can be worn under clothes Stretches up to 36.5 inches medium, large stretches up to 39 inches