1Strong Wrist Strap: The strong wrist strap can provide full protection. You can hold the wrist strap with your hands to control the children's range of activities in shopping centers, supermarkets, parks, zoos and other places where there are many people, so as to prevent them from going to dangerous places or getting lost.2Adjustable Shoulder Straps: The belts and backpacks are removable. And the durable shoulder straps can be adjusted at will to find the most suitable size for your baby. For most children, whether they wear thin summer clothes or thick winter clothes, they are suitable to wear, even adults can wear them.3Light Backpack: This backpack is light and soft, and will not burden your child. The capacity of the backpack can adapt to diapers, snacks, wipes, small toys, etc. It can cultivate children's awareness of carrying their own things.4Function: There is a great difference in height between infants and adults. Bending down and pulling a child's hand will cause back pain for adults, and it is also easy to tighten the child's young arm. It is very tiring to hold the child all the time. With our anti loss backpack, you no longer need to worry about these problems, and you can let your baby explore freely in outdoor activities.5With Security Key Lock: The kids backpack leash is equipped with a security key lock, which can only be opened by the key on the parents' bracelet, so as to prevent the baby from opening by himself and make the trip safer.