... very hard and durable2. Exquisite workmanship of metal oil coating make case glossy and like metal surface3. ... SpecificationMaterial PC SizePerfect fit for iPod nano 7ColorAlternativeCraftMetal oil coating MOQ2000 pcsSupply ability50000 pcs per weekQualificationsBV authentication ... - Various of materials like PC,TPU, silicone, wood, bamboo, aluminum, stainless, leather sheet and carbon fiber...etc.- ...