Chest Belt Chest Strap Backpack Rucksack Anti-Slip Child Adult Chest Strap Product Details Top Highlights ★ This is a band that prevents the shoulder straps of a backpack from slipping off. By attaching it to the backpack, it prevents the shoulder straps from slipping off, freeing up both hands. ★ The length of the belt can be adjusted to accommodate children and adults. It has an adjuster, so you can easily adjust the length. ★ It has a buckle that can be attached and detached with one touch, making it easy to put on and take off. It's easy to put on and take off, so even small children can use it with ease. ★ Two D-rings are included for attaching lightweight items such as sunglasses and keys. ★ Size: Width approx. 25mm, Total length: Max. approx. 40cm (adjustable). Application: For children's and adults' backpacks, school bags, commuter backpacks, mountain climbing backpacks, etc.