PolarPro Red Filter for GoPro Hero3 / Hero3+ / Hero4 60m Dive Housing
Amazon.com : Underwater Housing Red Filter for GoPro HD Hero 3 : Underwater Camera Housings : Electronics
Amazon.com : PolarPro Neutral Density Filter-For GoPro Hero4 and Hero3 Plus : Electronics
FLIP7 Three Filter Kit with SHALLOW, DIVE & DEEP Filters for GoPro HERO 7, 6, 5, 4, 3+, 3 - FLIP10
PolarPro "Frame" Glass Polarizer Filter for GoPro HERO3 / P1005
FLIP10 Two Filter Kit with SHALLOW & DIVE Filters for GoPro 5, 6, 7, 8, 9,
Diving Lens Filter Kit for GoPro Hero 4 and 3+ - Waterproof Housing – CamKix
Amazon.com : GoScope Reversible Red Filter for GoPro Hero 3+ OPEN BOX : Electronics
Guide for the Best Filter for your GoPro - Underwater Photography - Backscatter
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 Your Camera CASE} : Electronics - Amazon.com
Bower Xtreme Action Series 6-Piece Filter Kit for GoPro FK5UW