Title might also describe this item as a head restraint.
This item is an impressive work of engineering. I think one could escape from a federal prison easier than getting out of this device. It took probably 20 minutes to get all of the straps adjusted correctly, but once that was set up, the item was awesome. The wide neck collar definitely does its job and the rest of the straps on the device serve as a strict head harness. Also, with the dual zippers on the muzzle, any butt plug can be inserted into the wearer's mouth and then held in place by closing the zippers on both sides, providing limitless possibilities for gagging the wearer. Highly recommended to control the movement of one's head.