The multipurpose kids leash set comes with backpack, walker leash and anti-lost wrist link. Backpack + 2.5m retractable anti-lost wrist strap (backpack-to-wrist) Backpack + 1.6m belt (backpack to wrist) Independent anti-wrist link (wrist-to-wrist) Backpack + adjustable belt (balance assist) The top-of-the-line lock and key design provides an extra level of security - once locked, children will not be able to remove the wristbands until unlocked by a parent The 360 rotating head allows your kids to play and run freely. You dont have to worry about your kids tripping Made of high quality cotton, the wristband is breathable and comfortable for childrens hands. The size of the bracelet can be adjusted according to your needs The anti lost wrist link is made of stainless steel wire and durable PU material, which is safe for human body and difficult to cut off with knife. It is perfect for children aged 1-4. Particularly suitable for children with autism. 4 uses UPGRADED WITH KEY LOCK 360 ROTATION SOFT COMFORTABLE EXCELLENT QUALITY