Tested and certified to meet or exceed us department of defense standard 810f and uk department of defense standard 00 35 griffins survivor extreme duty case is designed from the inside out to protect your ipod touch from extreme conditions dirt sand rain shock vibration and a host of other environmental factors survivor 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 o