Ridges of IMPACTIUM material on the inside perimeter compress on impact to absorb and disperse shock. Dropped from 10 feet multiple times by independent labs to ensure superior protection A polycarbonate outer shell and an inner IMPACTIUM lining are molded together to give you two layers of protection in a slim, one-piece case. Raised bezel screen protection gives phone screen extra protection from scratching and shattering if your phone falls and lands face-down. Angled raised ridges on the back provide a secure no-slip grip and help prevent phone from sliding off surfaces. Designed to allow for Qi wireless charging.