thickness ultra-thin design, the key protector is widely used for carrying and storing all kinds of keys or other small items which has a ring to hang.Specification:Material: PU Leather, MetalSize: 10.8x 6.5cm /4.25 x 2.56 inch (L x W);Thickness: 1.8mm/0.07 inchPacking List: 2 x Key CaseAdvantage:This key case is mainly made of PU leather material, soft and durable.The simple and practical design, built-in keychains and sturdy metal hook, easily lock the keys to prevent the keys from falling when opening the key sleeve.Instruction:Hang your keys into the built in keychain, and put the protective cover back on.NOTE: Please check the key sleeve size before ordering.