Fitting around a naked GoPro HERO4, HERO3+, or HERO3 camera Armor GoPro Standard Cage from Varavon helps protect the camera from bumps and bruises while adding 1/4"-20 threaded holes on all sides, opening up a world of creative rigging and accessory mounting possibilities. The cage also features shoe mounts on top and bottom for additional accessory mounting options, and an Arca-Swiss type dovetail for mounting to ball heads. Additionally, the cage adds filter threading around the GoPro's lens to accept 40.5mm screw-on filters. This package comes with three 40.5mm lens filters: UV, ND8, and circular polarizer filters. While in the cage, you still have access to all ports and control buttons, with an integrated bolt used to secure a connected HDMI cable. The rear of the camera and the HERO port is also left unrestricted, letting you attach an optional BacPac accessory.