This Helmet cover fits the Ops Core Ballistic XP Helmet and FMA Fast Ballistic in a size up (If FMA helmet is a M/L get helmet cover in L/XL. Helmet cover designed the the specific needs of certain SF Units which combines some of the best features from our Mohawk and Raptor models in one. It Includes a sewn-in rear pouch for your PVS 31 battery pouches or counterweights and multiple accessory tether points in the back and front for keeping your valuable gear safe & secure. The cover employs the Agilite guaranteed perfect fit and was designed to endure even the toughest of environments. Made in Israel. Made of mil-spec materials and polymer hardware. NO REFUNDS OR EXCHANGES FOR BALLISTIC PRODUCTS.