1、This diving fins strap is made of rubber and plastic, solid, firm and durable to use, ensures a long time service. 2、Adjustable design, you can adjust the degree of tightness according to your own needs. 3、3 sizes for choosing, please check the size before you place an order. 4、Great accessory for diving and other underwater activities. 5、Includes one pair of fins straps, diving fins are not included. Features: This diving fins strap is made of rubber and plastic, solid, firm and durable to use, ensures a long time service. Adjustable design, you can adjust the degree of tightness according to your own needs. 3 sizes for choosing, please check the size before you place an order. Great accessory for diving and other underwater activities. Includes one pair of fins straps, diving fins are not included. Specifications: Condition: Brand New and High Quality Material: Rubber+Plastic Color: Black Size: S, M, L (optional) Length: Approx. S: 34.5cm / 13.5inch M: 40.5cm / 15.9inch L: 46.5cm / 18.3inch Weight: Approx. 114-136g Packing List: 1 x Pair of Diving Fins Strap Note:The product is not universal, please confirm whether the size matches.