Polar Pro Aqua Series Red Filter For GoPro Hero3+, Hero4 with Standard Housing
GoPro HD HERO 3+ 4 Black Silver Red Dive Filter + Dive Housing / SC-RF3+C / GoPro / Stuntcams - Stuntcams
Diving Lens Filter Kit for GoPro Hero 4 and 3+ - Waterproof Housing – CamKix
Red Lens Housing Case Filter for GoPro HERO8 Black | eBay
Fosmon GoPro Diving Housing Filter with Mounting Protective Frame for GoPro Hero 3+/4 - Red - Walmart.com
Backscatter Flip7 Underwater Filters for GoPro Cameras | Review
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