I’ve never thought I would need a child “leash” however when preparing for a trip to the hot air balloon festival, and seeing 32k attend. I knew I wanted something to keep my girls close and safe. These have been wore for a few hours one time. Magnetic end on parents end can unlock the child’s. Otherwise it’s double banded onto the kiddos wrist for secure placement. Paid $10 each. More info :: https://amzn.to/435n3il