Designed and tested to meet or exceed US Department of Defense Standard 810F Griffin s Survivor All-Terrain Extreme-Duty Case is designed from the inside out to protect your iPad from extreme conditions ... dirt sand rain shock vibration and a host of other environmental factors.Survivor All-Terrain is built on a shatter-resistant polycarbonate frame clad in rugged shock absorbing silicone. A built-in screen protector seals your Multi-Touch display from the outside environment while hinged plugs seal the dock connector headphone port hold switch camera and volume controls.Survivor All-Terrain is independently tested to meet or exceed environmental testing standards for blown rain blown dust and grit vibration shock temperature and humidity.