Snake River Prototyping Blurfix Air with Uv Filter BlurFix Air with Ultraviolet Filter combines a lightweight slip-over filter frame for the GoPro Hero3/3+/4 with a professional UV filter made from German Schott glass BlurFix Air with UV Filter can be substituted during low-light conditions BlurFix Air with UV Filter  Whats in the Box: BlurFix Air with UV Filter Storage case Microfiber cleaning patch Optional o-ring for secure fit BlurFix Air is made from two CNC machined Delrin pieces so that the filter frame can be disassembled to facilitate easy cleaning