1.protective cover 2.use conveniently 3.special design ,good quality and best price 4.enviromental Material: 100% silicone, nonstick Used for USB flash drive, keychain, chopstick holder, book cover, and name card holder Available in various colors OEM orders are welcome Size: 3.3 x 5cm /5.5 x 4.5cm and so on .An excellent children's gift Nontoxic materials Meets EN71 standards Phthalate-free