http://www.verizonwireless.com/b2c/...ryDetails&archetypeId=12486&accessoryId=47348 Tested and certified to meet or exceed US Department of Defense Standard 810F and UK Department of Defense Standard 00-35. This durable case has an outer layer of silicone with a hard front and back snap-on shell. The removable belt clip kickstand does double duty by providing hands free viewing of images and video. This rugged cased protects your iPhone 4 from dirt, sand, rain, and shock. More secure than the Otterbox Defender?