Diving Lens Filter Kit Compatible with GoPro Hero 4 Hero+ Hero and 3+ fits Standard Waterproof Housing Enhances Colors for Underwater Video and Photography Includes 5 Filters - Newegg.com
Polar Pro Polarizer Glass Filter for GoPro Hero 3,3+,4 | Bluewater Photo
Luxebell C200 Aluminium Alloy Skeleton Thick Solid Protective Case Shell with 52mm Uv Filter for Gopro Hero 4 Black, Silver - Luxebell Official Webiste
PolarPro GoPro Hero4 Session Polarizer Filter
GoPro red filter - When and how to use it for snorkeling and diving
Nflightcam Propeller Filter For GoPro Hero3+ And Hero4 | Aircraft Spruce
Fixed Frame w/ Filter for GoPro Hero 4 / 3 / 3+ - Black - Free shipping - DealExtreme
GO PRO HERO4 Accessories,ND filter / Neutral density / Lens Filter for Gopro Hero 4 / 3+ / 3 action camera (with tracking code)|filters for gopro|lens filterneutral density - AliExpress