... . material: 100% Silicon 2. Environmental protection, avirulent insipidity no corrosive. MP3 Protection Case:1. material: multiple color silica gel, texture is soft, resistance ... rip pull, feel is good, strong abrasion resistance.2. Environmental protection, avirulent insipidity no corrosive.3. Dustproof, is not easy to ... to damage, mobile phone and apparent surface creative MP3 Player Protection Case