This Three Pack is the ultimate above water kit for the Sony Actioncam AS100 and AZ1V mini actioncam. 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 a 2 stop ND and a 3 stop ND. These filters slow down the Actioncam's shutter speed which creates a blur motion. Using blur motion if perfect for illustrating high speed movement. The ND filters are also great for reducing blown out highlights and filming on bright days. These filters are perfect for improving your Sony Actioncam footage.