| LENGTH ADJUSTABLE | - The length of backpack sternum strap can be adjusted from 4 "to 22",which fits for most sizes of backpacks;| CREATIVE DESIGN | - The chest strap was designed with 2 D-ring for attaching some light stuff such as keychains earphone wire and Eyeglasses.| FREE YOUR HANDS | - The Backpack sternum strap with adjustable non-slip clips to prevent slippage when applied to different backpack straps, Keeps shoulder straps of your backpack securely in place and free your hands.| QUICK RELEASE DESIGN | - The chest strap was designed with a durable quick release buckle, which is very easy to buckle and unbuckle.| GREAT GIFT | - The backpack sternum strap is a nice gift for boys and girls, youngs and adults, best for school or travel supplies.