The Tech21 Impact Snap for Samsung Galaxy S3 uses innovative technology from D3O® to provide great protection without a harsh uncomfortable exterior. The case fits around the back and sides of the handset without impeding access to any of the buttons, connectors or other features. D3O ® is a patented protective material that combines enhanced chemistry with product engineering to produce high performance shock absorption and impact protections solutions. The same revolutionary technology is used by the US Special Forces and Ministry of Defence as well as in Sports such as motorcycling and skiing.