the Sponge Ball PU Keyring Chain is a Versatile & Playful Accessory Designed for Both Childrens & Adults. Made From Solid PU Foam Material, This Keyring Chain Ball is Not Only a Practical Attachment for Backpacks But Also Serves as a Stress-relief Toy. Its Soft & Bouncy Texture Provides a Satisfying Squeeze, Making It an Ideal Tool for Venting Frustration or Simply Passing the Time. the Sponge Balls Small Size & Durable Construction Make It a Perfect Pocket Companion for People of All Ages. Please Contact Me If You Need Different Colors & Specifications & Customization. International Freight May Vary a Lot Sometimes, Please Confirm the Price with Us Again Before Placing an Order.