KEEP YOUR BABY CLOSE: You can hold the leash in your hand to control the children's activity range in the mall, the supermarket, the park, the zoo and other places where there are many people, and prevent them to go to dangerous places such as roads and rivers. REDUCE YOUR WAIST FATIGUE: The baby's height is much lower than adults. You may be have a back pain because you bent to pull the baby, It is also easy to strain your child's young arm. With our anti-lost backpack, you don't need to hold the child again, just pull the leash and it will be a lot easier. HEALTHY AND SAFE MATERIALS: Made of pure cotton material, Passed the CPC certification, comfortable and breathable. Removable metal hook for durability. The shoulder straps are freely adjustable for all ages, whether they are wearing thin summer clothes or thick winter clothes,and even adults can carry it on. GIVE YOUR BABY FREELY SPACE FOR ACTIVITIES: The baby's favorite thing to do is not to be pulled by the mother, but to run happily. You can remove the leash in the safe place. At this time, the anti-lost belt will become a child's favorite toy. LIGHTWEIGHT AND CONVENIENT: Only 150g, convenience to carry. Simple designed, it's not a backpack, it's a harness that can not include anything inside it. In fact it is preferable as well, because if you put somethings in it like a backpack,it will add the danger to hurt your baby if he/she fall down.