Polar Pro - Aqua 3-Pack Filters - Go Pro Hero 4/3+ Edition (Red, Magenta, Snorkel Filters) - YouTube
Fantaseal 2in1 Diving Lens Filter For Gopro Hero 4 3+ 3 Red Correction Filter+16x Close Up Macro Lens For Gopro 4 Action Camera - Sports & Action Video Cameras Accessories - AliExpress
DiveMaster | HERO9/10/11 Black Protective Housing | Innovative Gear for Content Creators
Midwest Photo Polar Pro Switchblade3+ GoPro Hero3+
Polar Pro Aqua 3 Pack Red, Magenta and Snorkeling Filter For GoPro 4 a – House of Scuba
Amazon.com : PolarPro - DiveMaster - for Hero 9/10/11 Black - Protective Housing - Quickly and Secure - Capture Vibrant Colors in Blue, Green, and Shallow Waters - Diving : Electronics