The Polar Pro Magenta Glass Dive Filter fits the lens port of the GoPro HERO3+ Housing and is designed to provide proper white balance in green water, especially water that contains a high algae content. This glass color-correction filter works best at depths below 8'.
The filter is built into a slim frame that snaps on and off the lens port of the GoPro's underwater housing. It features a tether cord to help you avoid losing the filter while diving and a scratch-resistant microfiber pouch to store it in.
Because the filter is made of glass, care should be taken when handling and storing.