Guard Dog Body Armor FAST Ballistic Helmet Level IIIA w/ Multicam Helmet Cover Universal Medium-Large OD Green. This helmet is compatible with communication systems gas masks and helmet mounted night vision goggles. Our helmet has a fully adjustable five point harness with a leather chinstrap that holds a quick release buckle. Total weight is less than 3.7lbs. Sizes Medium: Head circumference 21.25-23.75". Large: Head circumference 22"-23.75". XL: Head circumference 22.45-24.4". NIJ Level 3a: Tested to stop 4 rounds of .44 Magnum SJHP traveling 1430 ft/s +/- 30ft/s Specifications for Guard Dog Body Armor Level IIIA FAST Ballistic Helmet: Manufacturer: Guard Dog Body Armor Threat Level: Level IIIA Condition: New Features of Guard Dog Body Armor Level IIIA FAST Ballistic Helmet This helmet caters to a wide range of users with head circumferences ranging from 20.0 inches to 23.75 inches. Lightweight Design: Weighing in at less than 3.7 pounds this helmet wont weigh you down during extended wear. Versatile Compatibility: Designed to accommodate communication systems gas masks and helmet-mounted night vision goggles our helmet offers seamless integration with your essential gear. Fully Adjustable Five-Point Harness: Achieve a secure and comfortable fit with our easy-to-adjust harness ensuring your helmet stays in place when you need it most. Premium Leather Chinstrap: Thier chinstrap complete with a quick-release buckle offers both durability and convenience allowing for swift deployment. Package Contents: Guard Dog Body Armor Level IIIA FAST Ballistic Helmet Polymer Picatinny ARC Rail Adapter Green Camouflage Cloth Helmet Cover Guard Dog Body Armor FAST-HELMET-U-G: FAST Ballistic Helmet Level IIIA w/ Multicam Helmet Cover Universal Medium-Large OD Green