Material selection: The fidget zipper bracelet is made of resin material, which is safe and non-toxic, and is firmly fixed on the hand. They fit easily on the wrist and won't break, discolour, or zipper off. PERFECT: This zipper bracelet is about 19cm/7.5 inches, suitable for most boys and girls wrist size. The zipper bracelet is light and easy to carry without taking up space. Use one to string all bracelets together, or to wear on one's hand; the decorative effect is loved by both boys and girls FEEL HAPPY: Keep boys and girls focused with these friendship fidget zip bracelets. It's also a great gift for someone with autism and anxiety to pass the time. To open and close the bracelet, pulling back and forth through the zipper pull is a great way to relieve stress. Smooth: Our friendship fidget bracelet has fine workmanship and smooth zipper design, easy to unzip and make a crisp sound, which helps relieve stress. Widely used: These neon color zipper bracelets can be a lovely gift for friends or your own boys and girls for parties, birthday parties, camping trips and Halloween, or as game rewards for schools, etc.