Double Anti-lost ProtectionUnlike ordinary anti-lost reins, we offer 2 different designs of anti-lost reins. Child puts on the butterfly strap, the other end is grasped by the parents The 1.5m spring strap is connected to the wrists of the parentsand the child, great for taking it out with your kids. 360 Rotation Double-Layer BuckleThe wristband is equipped with a 360-degree rotatable metal connector and double-Layer buckle design, provides increased security and more freedom, a must-have seat belt for taking your child out. Comfortable Durable MaterialIt is designed with cotton which is breathable, it makes kids and adult more comfortable, without hurt hand. Durable spring band made of stainless steel wire and PU plastic for extra security, strong and not easy tobreak! Adjustable DesignThe straps of the harness are adjustable, it always stay in the correct position and ensure your little one is comfortable. The wrist strap can be adjusted up to 14 cm, suitable for ages 1 to 6 years.