There are 3 types: MH (no holes), BJ (diamond holes) & PJ (oval holes), each type has 8 colors available (Foliage Green, Black, Dark Earth, A-Tacs, Multicam, Desert Digital, US Navy Plate, AT-FG) Fast economical helmet is the same design as the Ballistic and Carbon FAST helmets but with a polycarbonate shell and molded front NVG mount .It is great for training, search and rescue, climbing, hunting, paintball, CQB shooting and other outdoor activities Tactical FAST Helmet Base Jump/BJ Type with Protective Goggle (Color: Multicam) Brand new in box Size adjustable Made by ABS plastic Inner Suspension is simply 1) Lightweight, multi-impact, ventilated liner with repositionable impact pads and closed-cell comfort foam that is not affected by temperature, altitude, or moisture 2) With a bullet-proof version and the carbon version of the same design, just relatively inexpensive polyethylene ** level plastic shell at the same time the head of night vision base directly integrated into the helmet shape on top of the material, obviating the need to purchase an additional night vision base capital, but also can be installed directly such as camera / headlights and other equipment in the head. 3) Suitable for training, search and rescue operations, climbing or other outdoor sports 4) Size (58-61cm or hat size 7 3/8 to 7 5/8)