The Skeleton Housing for HERO3/HERO3+/HERO4 from Revo has the same form factor as the Standard Housing, but with open side and back panels that allow access to the camera's cable connection points. It can be used for live-feed video, powering the camera from an external source, keeping the camera cool during shoots in hot environments, and more. It's also the housing best suited to capturing enhanced audio if you're recording at low speeds where wind won't be an issue. The housing is compatible with the GoPro HERO3, HERO3+, and HERO4 and is intended for use in dry environments only, as it is not waterproof.