The phone case can withstand drops up to 10 feet on concrete. We adopt aluminum alloy to give your case a solid foundation that offers military-grade drop protection and a clear back to show off the true color of your phone. The key element is a soft TPU bubble pattern that inlays within the inside of the case, that absorbs shock and deflects impact away from your device. It adds nano zirconium phosphate silver-loaded antibacterial to fully improve anti-bacterial property.