This is a chest belt with Velcro closures for babies and kids. Do you ever find that your child's backpack shoulder straps slip depending on their clothing? They slip even when wearing slippery outerwear like vinyl, and even with a T-shirt, they slip on children who are thin. This chest belt is for preventing slippage. Simply attach it to the backpack straps on both sides with plus snaps. It has Velcro closures so that young children can put it on themselves. We recommend this Velcro type for children aged 2 and 3. We've received many comments like, "They seem so happy they can do it themselves" ╰(⸝⸝⸝´꒳`⸝⸝⸝)╯ We also make buckle types, but we're still concerned about little fingers getting caught. We think children around 5 years old will be able to put on the buckle type themselves, so we recommend switching to that then! We recommend shoulder straps up to 5cm wide. #nikoチェスト #chestbelt #handmade #backpackslippageprevention #backpackstrap #schoolbag #fieldtrip