This Three Pack is the ultimate above water kit for the GoPro Hero4 and Hero3+ cameras. It includes a Polarizer Filter for filming near water or snow of bright days. It helps cut down reflection as well as increases color saturation and sharpness. Also included is the Neutral Density Filter. This filter slows down the Gopro camera's shutter speed which creates a blur motion. Using blur motion if perfect for illustrating high speed movement. The Macro Lens included is great for filming close up shots. This lens allows the camera to focus on subjects from 3 to 12 inches away. These are perfect for adding to your wide angle GoPro edits. All Filters and lenses are constructed out of glass for sharp optics and maximum scratch resistance.