Uses: Soft handguard, can quickly retrieve the pulp board when falling into the water. Function: Commonly used for boogie boards or paddle safety ropes. Material: Made of high-quality TPU material, fast , high strength, strong and durable. Comfortable And Adjustable: Strong, widened , freely adjustable, firmly bonded, with quick pull rings, easy to open, more convenient to use. Safety knots: There are safety knots at both ends of the spring rope, which are stronger and safer. Specification: Model: JB-A31 Hardness: 902 Resilience: 40% Elongation: >%450 Tear strength N/mm: >80 Weight: 58G Material: TPU Size Chart: Bracelet: 32x4.5cm/12.60x1.77inch-thickness 6mm/0.24inch Spring rope diameter: 5mm/0.20inch Length: normal 55.5cm/21.85inch Total stretch length: 1.6m/62.99inch(including nylon rope and bracelet) Package Includes: 1 x Hand Rope Strap Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!