The invisibleSHIELD is the premier name in handheld device protection. Made from a urethane film originally used to protect the leading edges of military helicopter blades, the invisibleSHIELD is clear, durable, and virtually scratch-proof. The invisibleSHIELD is precision cut to fit your Nikon D300 Digital SLR, giving it perfectly contoured protection that other screen protectors can't match. The protection provided by the invisibleSHIELD is unique, not only in the way it keeps your device from getting unsightly scratches, but also how it doesn't add any bulk or obscure the sleek aesthetic design of your Nikon D300 Digital SLR. If your invisibleSHIELD ever becomes scratched or otherwise damaged while protecting your device, don't worry, all invisibleSHIELDs are backed by a lifetime guarantee. Simply send it back to ShieldZone and they will send a replacement, for free, for life!