The PolarPro Polarizer Filter for the GoPro Hero4 is the best all around filter for filming outdoors. The filter will help enhance your GoPro Hero4 footage by reducing glare/reflections therefore leaving behind beautifully saturated colors. This Polarizer Filter works well filming near water or snow and helps improve contrast giving you sharp videos/photos. Any time you are filming outdoors (unless it is dark out) the polarizer will only help improve the look of your videos. If you are trying to capture the highest quality content possible this filter is for you. It is easy to attach our filter to your camera by snapping the lens onto the housing for quick tool-free installation/removal. Constructed of glass the polarizer filter provides sharp optics as well as high scratch resistance. Before your next outdoor adventure pick up a polarizer and see how vivid your outdoor videos can be.