1. It is made of safe and environment-friendly TPE raw material, which is environment-friendly and non-toxic and feels the same as the original material. 2. The lock is die-cast with zinc alloy material and processed with electroplating and oil spraying on the surface, which is harmless to human skin, environmentally safe and non-allergic. 3. The design of the wristband is ergonomic, strong and durable, moderate in softness, very comfortable to wear, Size 10x2x0.5cm,it can be adjusted according to the situation of individual wrist.