1) made from 2.5MM neoprene, 2) Free size, adjustable velco 3) various colors available, Neoprene waist trimmer: 1) made from 2.5MM neoprene, 2) Free size, adjusable velco,because the fabric on the neoprene is a kind of loop fabric, 3) various colors available,Packing: PE bags, Standard export carton Neoprene Waist Trimmer