Waterproof And Sweatproof Rubber Watch Strap $ 7.21 Product information: Strap material: non-stick fluorine rubber Buckle type: pin buckle/butterfly buckle Strap color: black/blue/green Product thickness: 2-3mm Product interface: I general interface Product length is about 120+ 80mm Strap width: 20 22mm Packing list: 1 x strap