This hard plastic frame protects your GoPro while giving you additional options for connecting accessories. The frame has two shoe mounts: one on top and one on the side. This allows you to easily attach a light, microphone, or other accessory. A lock on the top keeps your camera securely attached to the frame. When the GoPro is in the frame, you can use the buttons and screens as usual. At the bottom, it has a standard GoPro connection. Using the GoPro mounting screw and quick release plate that come with this set, you can easily attach the GoPro to a mount or other accessory.