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 outside environment while hinged plugs seal the dock connector headphone port hold switch and volume controls a detachable heavy duty clip secures your iphone to a belt or bag strap designed and independently tested to meet conditions outlined in us department of defense mil std 810 integral display shield deflects wind and rain