Description: The filter could limit the reflection from non-metal surface such as water and glass windows. Using the filters, the colors shall become brighter and clearer and the contrast shall be strengthened. CPL Filter provide color and contrast enhancement. It removes glare from non-metallic surfaces, such as windows and water. With the influence from UV light. the outdoor photos look hazy. The UV filters are suitable for both black and color films under bright sunshine. Which could be used to limit UV light and also as lens protector. Variable ND Filter is suitable for day-shooting while your camera is set in high Aperture and low shutter speed to create special effect. Specification: For Gopro Hero 4 Session Camera Type: CPL, UV, ND2 , Red , Yellow , Purple Filter Material: optical glass Package Includes: 1x CPL Filter 1x UV Filter 1x ND2 Filter 1x Red Filter 1x Yellow Filter 1x Purple Filter 1x Connecter Note: Camera, Case, Mount and Screw are not included, for reference only