82% Nylon,18% Polyurethane. Size Chart:Size (S) Waist = 68-76cm Size (M) Waist = 64-73cm Size (L) Waist = 77-84cm Size (XL) Waist = 84-409cm Wear freely and comfortable. More sexy Colors to choose. DUE TO ASIAN SIZE.Please choose ONE SIZE UP than you normally wear.