[WTS] i Phone 4 - Bumper

i Phone 4 Bumper - White, Green, Black.  Key Feature: UltraSlim Bumper probably be the thinnest bumper (only 1.5mm thickness) UltraSlim Bumper provide protection to the edge of iPhone 4 but keeping it in original apperance It is made of high quality Hydrocarbon Polymer with excellent tension Durable and tear-resistant Easy access to all controls and ports Improve iPhone 4 antenna performance