The Socub Anti Lost Wrist Link is designed to ensure child safety in crowded places. It features a key lock design with a double safety clasp wristband to prevent children from removing the wristbands. The wristband is made from anti-cut stainless steel materials and covered with durable PU material, making it secure and durable. The extendable wire stretches up to 8.2 ft, offering more freedom and space while ensuring kids' safety. The wrist link is comfortable and adjustable with breathable sponge padding to care for your baby's tender skin. It is perfect for use in supermarkets, parks, shopping malls, subways, playgrounds, streets, airports, and other crowded places. The wristband can also be connected to backpacks and baby carriages for convenience.