Record properly color-balanced footage while snorkeling with your HERO5 Black by attaching this GoPro Red Snorkel Filter. The red color works best in blue water or clear fresh water at depths of 5 to 33 feet. Installation of the filter is tool free, just press it on. The filter itself is made from optical glass for maintaining a clear, sharp image. A tether for keeping the filter with your camera, so you don't accidentally drop it, is included, as is a microfiber storage bag.