High-Quality Steel Wire: The baby anti-loss leash is built with 49 stainless steel 304 wires and wrapped in durable PU material to prevent fraying and breaking. It cannot be cut without special tools. The rope can extend up to 2 meters / 6.6 ft. The spring has strong elasticity, does not deform when stretched, and has high load-bearing capacity. Comfortable and Safe: The soft and comfortable cotton wristband is made with a breathable sponge cushion that protects wrists from uncomfortable scratches and sweat, making it comfortable for both adults and children to wear. The sturdy Velcro strap is adjustable, allowing the wristband size to be customized according to your needs, and it is not easily detached. The simple buckle design allows for quick release and closure. Key-Lock Design: The leash features an enhanced key-lock design, ensuring the child cannot remove the wristbands. Parents do not need to worry about the children unlocking the connection on their own unless it is unlocked by the key. These wristbands are not toys, children should not wear them unsupervised, and parents should not teach them how to unlock them by themselves. 360-Degree Rotation: The safety leash is attached to the wristbands with metal cuff links. The 360-degree rotating stainless steel cuff links protect toddlers' wrists from uncontrolled movements, ensuring flexible and secure activities, so your children wont feel restricted. These wristbands are highly flexible. If parents do not follow, the leash may stretch too far, and the child may fall. Great Anti-Loss Wristband: It is a great help for you while traveling and shopping. With this child leash, your child can move within your range, and you no longer need to worry about them running off and getting lost in public. You can even attach the child leash to your stroller or backpack. Perfect for supermarkets, parks, shopping malls, airports, scenic locations, and crowded places.