OneTigris Airsoft Paintball MICH 2001 Action Version Tactical Helmet with NVG Mount and Side Rails Made from ABS engineering plastics, weights about 660g Comes with the side accessories rails for mounting flashlight, survival lights, signal recognition lights, and headset holder, etc Integrated Night Vision Goggles (NVG) Mount. Various Panels Allow you to Customize your Helmet with Patches Perfect helmet for airsoft paintball or cs game players Size adjustable at chin & neck band; Head circumference 56-61cm?22-24 inch?