Luxebell C200 Aluminium Alloy Skeleton Thick Solid Protective Case Shell with 52mm Uv Filter for Gopro Hero 4 Black, Silver - Luxebell Official Webiste
GoPro Protective Lens + Covers ALCAK-302 B&H Photo Video
Amazon.com : Frame Mount Housing Case for GoPro Hero 4 3 3+ Action Camera - Frame Housing Case with Basic Buckle, Long Thumb Bolt Screw, UV Protective Lens, Lens Cap, and Side