Cotton cloth + steel wire + reflective material; eco-friendly, skin-friendly fabrics, easy to use, wrist straps are soft no friction, excellent ventilation, comfortable and breathable. Made of soft superior breathable cotton material and the wrist link can extend to 1.5m/59inch, making both the parent and the child comfortable. It includes a 150cm/59inch anti lost link with 360 degree rotatable stainless metal buckle and a soft skin-friendly wrist band, safe helper, easy to carry which will keep children more closer and safe to avoid any other destructive behavior any other accident. Keep children close, offer children independence but keeps them safe at the same time. Suitable for looking after children, keep them close without watching them tightly, comfortable for parent and children. Perfectly to avoid losing your kids in the public places, especially the crowded street, shopping malls, walking, travel, stations, railway stations, subway, roads, outdoor, etc., to prevent children from losing in public places, to prevent accidents. Product size: Automatic rebound link 1.5m, adjustable children's velcro 15cm, adjustable adult velcro 19cm, With the elastic wire rope design, good quality more durable and easy to stretch.