Don"t let anyone tell you it"s impossible to mount filters on a GoPro camera. We took our professional WonderPana filter system, and miniaturized it to fit everyone"s favorite sports camera; the GorPro HERO3/3+ or HERO4. When you bolt the WonderPanaGo onto your GoPro HERO3, 3+ or HERO4 camera, you"re adding a sturdy all-metal mount for our filter system. The WonderPanaGo is the flagship of our exciting Go Tough line of all-metal action camera accessories and mounts.