PolarPro SwitchBlade7 Red Filter for GoPro Super Suit
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
Polar Pro Aqua Red Filter für GoPro Hero3
Diving Lens Filter Kit for GoPro Hero 4 and 3+ - Waterproof Housing – CamKix
SANDMARC Aqua Dive Filter for GoPro Hero 7, 6 & 5 Super Suit - Red, Magenta & Yellow
Gopro Red Filter for sale | eBay
HERO6 BLACK RED FILTER
PolarPro GoPro Hero8 Red Filter 3-Pack for Underwater Filming