MPERO Collection Dual Layer Aluminum Plated Black Case for Samsung Galaxy S4 / S IV Specially designed case for Samsung Galaxy S4 / S IV. Multi-layered design featuring an inner shock resistant silicone and an outer snap-on plastic frame. Matte finish aluminum rear panel designed to add style to your device. Tough and durable polycarbonate outer shell designed for maximum protection without sacrificing functionality, easy access to camera, charging port, headphones. MPERO is a protected trademark.