Description: Using the filter, colors become brighter and clearer and the contrast is strengthened The filter could limit the reflection from non-metal surface such as water and glass windows. CPL Filter provide color and contrast enhancement. It removes glare from non-metallic surfaces, such as windows and water. Lens cap cover can protective the camera lens Compatible only with GoPro Hero 4 Session Specification: Lens Diameter: 58mm Material: Glass, plastic Package Includes: 1x 58mm CPL Lens Filter for Gopro Hero 4 Session 1x Lens Cover 1x Connecter Note: Note: The camera is not included