Approved by SGS Military Drop-Testing MIL-ST810. Two materials case combines to the one from Exclusive Coating touch as smooth skin. Fingerprint less with excellent hand feel. It reduces at drop impact and damage by using high Anti-Shock TPU material and the inner design of edge grip. It prevents from impact and anti-scratch due to the 1.2mm high TPU edge from front screen and 1.5mm high from the back cover to the lens. The hanging function is designed for your personal hanging ornaments. Compatible with most of 3D full coverage glass protector.