Defense Edge for iPhone 7 is machined aluminum protection with an interior rubber lining. This means that no metal touches your iPhone body. You get the premium look of metal on the outside and soft rubber on the inside. No tools or screws required, Bump Gear Plus is easy to install and remove. For an added touch of luxury, volume and lock buttons are protected by machined metal button covers. Shock absorbing rubber bumper Anodized aluminium frame Slim frame design matches an Iphone Machined metal button coovers