Zagg invisibleSHIELD Screen Protector for Nokia Lumia 830 - Retail Packaging - Transparent (Full Body) The invisibleSHIELD Dry is a razor-thin, ultra-tough, military grade film. Military Grade Protection: Powerful, Strong components were originally designed to protect military helicopter blades. Dry application makes applying your InvisibleShield simple and accurate. Full Body Protection!! Custom designed for Nokia Lumia 830 with Fitbit Flex and Nokia Lumia 830 ONLY!!