Key Lock Design- Our wrist link has a key on the parent's wristband. Lock Design ensures that the child cannot get rid of anti-lost wristbands unless parents unlock the lock on the child's wristband. The wrist link is made up of stainless-steel wire and sturdy PU material, which is secure. It is linked to the wrist strap with metal connectors that can freely rotate 360 degrees. Safe and comfortable- The HappyVk toddler harness with a leash will keep your kid comfortable and safe at the same time. We used heavy-duty metal clips and D-rings for the leash and wrist link connecting for safety reasons. The chest strap is closed with a Locking Buckle, so kids cannot open it. The kid harness is very adjustable and lightweight for the best comfort. The breathable mesh cloth on the back is highly increasing comfort. Highly adjustable and easy to use- Our baby leash is made to fit children 1 to 4 years old. The soft cotton shoulder and chest straps can be adjusted (up to 29 inches) to find the most comfortable position for each child. The chest strap can adjust horizontally but also move up and down for best positioning. The leash is easy to be attached/detach to the harness by using a metal clip. The clips have a 360 degrees rotation head, so the leash will not tangle. Anti-lost- Keep your children close to you while out in public and simultaneously give them freedom. The leash length is adjustable up to 1.5m/4.9ft, and the shrinking chain is stretchable with the longest length of 2m/6.5ft. The leash harness can be used on multiple occasions in crowded places: shopping places, amusement parks (like Disneyland), airports, or during travel and daily walking. Cute design- We created an original design on our baby leash, to make sure we made it unique. This adorable design will make your kids love it and enjoy wearing it everywhere. Toddler must haves. The HappyVk Safety Harness for Kids is designed to allow the kids to have safer moving space and feel comfortable. The Baby Leash Harness will keep your child close to you and at the same time, give him independence during his activities. Just have fun, enjoy the moments and forget about the feeling of losing your child. You can have your kid safe and close to you in crowded places like shopping, amusement park or during travel and daily walking. We created an original design on our toddler harness with leash, to make sure we made it unique. This adorable design will make your kids love it and like to wear it everywhere. Sturdy, it is made of high-quality materials, with durable and robust metal D- rings and clips. Lock Design ensures that the child cannot get rid of anti-lost wristbands unless parents unlock the lock on the child's wristband. There are Three Different Ways To Use it: - baby harness with anti-lost leash; - baby harness with anti-lost wrist link with the key lock; - anti-lost wrist link with the key lock connecting the child's hand with the parent's.