This vision restricting visor is made specifically for the HGU-56 flight helmet. If you look in the photos you will see two tabs (one left and one right) that will butt up against the helmet. On the tab is both parts of velcro attaching parts. One part should be attached to the helmet on each side so that they line up with the velcro left on the visor. Used for instrument training. The visor is new, and is light weight. Ship only to the US.