Dive safety rope: The rope that guides the diver back to the original position. One end is attached to the weight of the diver's guide rope, and the other end is attached to the diver's body. Material: The rope is made of TPU high elastic polyurethane, the wristband is made of soft SBR soft rubber + to fix the belt handle firmly, the connection is made of 1.5mm stainless steel double bearing 360 rotating design, and the lock is made of zinc alloy material. Breaking force: 24KN. Adjustable: with , comfortable and not holding hands, adjustable size. Great accessory: for scuba diving, freediving, drift diving or other underwater sports. Note: It must be turned to open to effectively ensure the safety of diving. Specification: Hardness: hardness (Shore) 902 Specific Gravety: Specific Gravety (g/cm3) 1.20 Resilience: Resilience (%) 40 Ultimate Elongation: Ultimate Elongation (%)>450 Tear Strength: Tear Strength(N/mm)>80 Size Chart: Product Size: Diameter, 5mm/0.20inch; Length, 1m/39.37inch Package Includes: 1 Piece Freediving Lanyard 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 online shopping!