The Oncore Designs Eclipse Lens Hood with Strap for Naked GoPro HERO3 prevents stray light entering the lens and improves image quality. The lens hood uses a strap with hook-and-loop fastener to secure directly to the body of the GoPro HERO3, HERO3+, or HERO4 without the underwater housing. The lens hood is threaded to accept standard 37mm filters and extends beyond the lens to protect it from impacts.