Defense Shield combines hard polycarbonate, soft rubber and anodized aluminum to form the best protective iPhone X case. The use of machined metal instead of plastic provides military-grade drop protection without the bulk . Drop tested to survive 9.9? (3M) drops on concrete, Defense Shield is the ultimate way to protect but not cover up, your iPhone X. A heavy-duty, machined aluminum bumper protects the perimeter of your device, while inside, soft rubber wraps around your iPhone X, protecting from drops and ensuring metal never touches your device.