Tactical Mask and FAST Helmet, Full Facial Protection with Anti-Fog Clear Lens Mask with Adjustable Strap - One Size Fits All PJ Type FAST Helmet with Mask: ABS Engineering Plastics + Anti-seismic Foam Plastic + Nylon. Preinstalled with 9 pcs EVA pads. Rail System & Velcro: Side Rails fit a variety of tactical accessories and have been fixed with the helmet body. NVG Shroud, Bungee Retention for NVG; Velcro Panels Allow Fitment of Patches. Most users commonly mount POV Cameras, lights/illuminators, battery boxes, IFF Markers (identification friend or foe), and Helmet Covers. Adjustable suspender straps and chin/neck. Adjustable buckles on the strap allow adjusting the tightness with one hand; fits head circumferences about 55-60cm (21-24.4 inch) which translates to your typical Size: M/L. The included mask is made with an ABS frame, the interior is lined with a breathable and soft spongy material and the goggles are equipped with an anti-fog clear lens. What Do You Get: Black FAST Helmet Preinstalled EVA Helmet Padding BLACK Tactical Mask with Clear Lens 9pc Helmet Accessories with Installation Guide