The Protector Helmet This NIJ 0106.01 Level IIIA compliant ballistic helmet is fitted with a fully adjustable and removable 4-point harness. The additional adjustable chin strap with side release buckle closure provide ultimate ease and comfort. Allows for an integration of NVG brackets and side accessory rails. Constructed from high strength composite materials, this helmet is finished with a matt/textured PU paint with low IR. Sizing Information Small/Medium: ~20.5in - 22.4in (52-57cm) 2.7lbs +/-.1lbs (1223g +/- 50g) Large/XL: ~22.4in-24.4in (57-62cm) 3.1lbs +/-.1lbs (1395g +/- 50g) Key Features ACH design Meets NIJ 0106.01 Level III-A for 9mm/.44 MAG performance Shell thickness of .3 inches (8mm) Comes with a nylon carry bag