- CrashGuard is a hybrid case built from hard and soft polycarbonate. Our unique polycarbonate material, unlike commonly used TPU, offers excellent drop protection by absorbing shock. The soft inner shell uses our ShockSpread technology with the honeycomb structure to enhance the drop protection by suspending the iPhone from any surface. RhinoShield CrashGuard has a matte finish which enhances the grip on your device. This finishing also serves to make the cover more durable, as it is harder to scratch. We have devoted great effort to push the technical limits in order to keep the thickness of the case under 0.9 inch which is the first of its kind in the rugged bumper case market. This makes the cases sleek, strong and durable. The case weight less than 0.5 ounce which is much lighter than all rugged cases. We want to provide maximum protection at minimum weight, so that the cases are fully capable of providing full impact protection while not obstructing your user experience.