... case1. Material: Plastic USB flash drive cover case & silicone USB circle drive cover case made from 100% silicone, nontoxic, environmental-friendly ... service.4. Quality:Plastic silicone USB flash drive cover case with high quality, professional Quality Department follow ISO9001:2008’ ... , CE, Rohs, EN-71, 6P. 6. Usage: Fashionable,stylish,slim,scratch-free,firm and durable. It is flexible, good feeling ...