ATAIRSOFT PJ Type Tactical Fast Helmet with Visor Goggles Low Price Version FG + 1 x Multifunction Card Standard Shipping 8-15 days to USA from Hong Kong China. Hat size: 7.25" ***Not only for tactical activities, it also can be used for cycling. ***Adjustable headband Weight: 600g ( Internal width: 6.69" (17cm); Internal length: 8.66" (22cm) ). Include sliding goggles / With 1 x Multi-function Card. Side Rails fit a variety of accessories, Integrated NVG mount compatible with most GoPro NVG style mounts (NVG mount not included)