Polaroid 58mm HD Multi Coated Magenta Dive Filter.
Features:
✔️For Use In Green Water
✔️Designed to work up to 70' deep
✔️Provides increased vibrancy and a more natural-looking white balance
✔️Works with the Polaroid filter adapter for GoPro Hero 3 & 3+ (Not Included)
✔️Made out of high quality glass