M410 iPhone 4 Metal+Silicon Rubber Bumper
Features﹕
▆ Got an award in the IF Innovation / Design competition in 2011 Computex
▆ The combination of elastic silicone grippers and the rigid aluminum frame offers an incredible ability to absorb most of G-force from any impact
▆ Aircraft grade anodized aluminum
▆ Fine anodized surface finished
▆ Allows the access to all the buttons and operation without remove the bumper