PolarPro "Frame" Glass Polarizer Filter for GoPro HERO3 / P1005
Amazon.com : SOONSUN Waterproof Housing Case with Dive Filters for GoPro Hero 3, Hero3+, Hero 4 Silver Black Cameras, 40m Underwater Dive Housing Case with Filters, Spare Backdoor, Bracket Buckle Accessories : Electronics
New Go pro Hero 4 3+ Camera Accessory, Aluminium Metal Housing Frame Alloy Protective Case +UV filter for Gopro 4 hero4,hero3+|gopro aluminium case| gopro 4 heroaccessori gopro hero - AliExpress
Diving Lens Filters For GoPro Hero 3+ & 4 | CamGo
Amazon.com : GoScope (60M) Red Filter - Compatible with GOPRO HERO4 / HERO3+ / HERO3 Dive HOUSING (60M Case Only) Laser Cut Optical Red Filter {See Pictures to Make Sure This FITS
FLIP10+ One Filter Kit with DIVE Filter for GoPro HERO 5, 6, 7, 8, 9, 10, 11
Guide for the Best Filter for your GoPro - Underwater Photography - Backscatter
PolarPro Red Filter for GoPro Hero3 / Hero3+ / Hero4 60m Dive Housing