Featuring EPP upholstered with lightweight, impact, ventilation and other features (EPP padded by the IMPACT the PADS shock layer and the LDV memory foam layer), and and the EPP cushion is not affected by environmental temperature, altitude and humidity damage * HELMET with the helmet comes with two different-sized EPP cushion, 1/2 "and 3/4" to facilitate users to configure. * HELMET with FAST-ARCs (OPS-CORE patented technology for increasing helmet functional after installation, helmets feature has been a lot of Development), be able to connect the headlamp, camera, goggles, communications equipment and HALO many features of the masks and other equipment, FAST the HELMET instantly become the all-around helmet. * FAST BASE JUMP MILITARY HELMET Helmet original Velcro attached along the sides and rear, the user can according to their own need to be equipped with the IR identification chapter morale Zhang, IR, identification lamps and other combat accessories. * HELMET with the OCC-the DIAL adjustable headband (OPS-CORE consists of a patented technology, a knob to adjust the helmet tightness), the OCC-the DIAL mechanics to optimize the design of the knob to adjust the way, just need to gently twist knob, you can head space to tighten, so that the stability of the helmet to the extreme, so that users do not feel to wear a helmet when loose sense on both sides of wearing a design can pickup drop COMTAC / SORDIN noise communication headset is placed inside the helmet, eliminating the trouble of each helmet need to wear headphones to wear helmets.