The child friendly harness keeps your child safe and close the safety strap adjusts as your child grows the buckle allows easy on off access allowing it to be used as a regular backpack when the rein is not required the long 3 foot rein allows your little adventurer to move about while still under parents39 control ideal for the outdoors and public places use as a backpack or harness includes fun pouch for toys adjustable straps convenient safety buckles safety reig