Value package: The extendable set includes 4 pieces of retractable buckles, each roll is equipped with a key ring and a badge holder strap, zip holds almost everything you care about. Sturdy material: With tear-resistant nylon cord and fabric-reinforced vinyl strap and key ring with metal snap. Your belongings are stored safely, at hand and to hand. Easy to : simply pull the cord and part of the cord will be released. So you can keep all your in one place is easily accessible. Multiple usage: It can be clipped to a variety of different garments or items for quick and convenient access, including belt loops, school bags, lab coats, suit jackets, etc. Size: extendable (height: 5.5cm, width: 3.5cm, 26g) retractable reel, cord can be up to 65.5cm long. color:Black Material:Metal + Plastic Package Contents: 4 x extendable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.