1. Anti-friction, Dustproof 2. Protect from abrasion 3. Waterproof, improve the safety 4. keep accessories in good condition SpecificationSuperior quality with factory wholesale price. The more you buy, the cheaper they are. It's our quantity discount policy.Protect cable&earphone cord and usb connector in perfect condition.Enjoy more safe.Easy to install and revove. Fast delivery in 2 or 3 ...