1 To keep your kids close to you during the traveling._x000D_ 2 To keep you kids safe in the crowed people._x000D_ 3 To encourage your kids to explore the environment._x000D_ 4 To Free your hands and enjoy a peace of mind._x000D_ _x000D_ Package include: 1*baby anti-lost harness_x000D_ According to different pulling tensions, the item can be stretch to 1.2 meters to 1.5 meters.