The all NEW OF77 helmet is based off of the very successful GM67. Features the all new Spa Soft and Coolmax® interior and multi-density cheek pads. The OF77 is like having two helmets in one. It offers the comfort of an open helmet, plus it quickly and easily converts to a full face helmet for those looking for increased protection and comfort with the installation of the optional jaw piece.The 67s delivers a greater field of vision due to its large shield surface. Even with the removable jaw piece in place, the 67s field of vision is greater than most traditional full face helmets