Allwish Luxury Ultra-thin Aluminum Metal Bumper Protective Slim PC Back Case Cover For Samsung Galaxy S4 - Black 100% Brand New. Compatible for Samsung Galaxy S4 ONLY!(Please refer to the color "Gold" for more pictures) Material: Aluminum Metal frame + Acrylic Plastic back plate Made of High-Quality Aircraft Grade Aluminium Metal and frosted finish acrylic back plate. Easy to put on and easy to take off. Protect your phone from bumps and knocks.