ATAIRSOFT PJ Type Tactical Fast Helmet w/Protective Goggles Version Multicam Hat size: 7.25" ( Internal width: 6.69" (17cm); Internal length: 8.66" (22cm) ). Weight: 550g ***Please check the image on left side Not only for tactical activities, it also can be used for cycling. Include sliding goggles / Adjustable headband. 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)