MORE SAFE: Lock design is hard for kids to open, which will keep your children more safe while being at crowd or in the public. Ensure kids' safety while offering them more confidence and space to explore the world. COMFORTABLE WRISTBAND : Soft padded wrist strap made of sponge guarantees a highest comfort level for your children at a sudden tug. Protect your child's and your wrist respectively. RESILIENT CORD: The connecting elastic rope is made of stainless steel and wrapped with PU which can be extended up to 1.5 meters. NONTOXICITY & FLEXIBILITY: Made of eco-friendly material and odorless. The wrist link is composed of metal buckle, magic sticky, composite fabric and TPU steel wire rope.The hook and loop can be adjusted maximally. NOTE: Parents should keep following the kids closely to avoid the pull making kids lose balance and fall.