Features:- ABS and PC shell with EPS lining, lightweight, durable, strong and crashworthy, protect your head effectively- Double loop chip straps secure the helmet to your head- Mount in forehead and rails in two sides, can install torch, signal light, etc.- Many magic tapes on the helmet for being a military camouflage pretender- Eight holes on the top of helmet, breathable and comfortable- With the detachable soft pads, easy to clean, comfortable to wear- The hard foam blocks have softer foam pieces for comfortable wearing- Adjustable elastic belt to fit different head sizes, head circumference is 55 - 59cm / 21.65 - 23.23 inches- Suitable for kite surfing, cycling, driving, shooting, hunting, paintball, etc.Parameters:Shell material: ABS and PCInner material: EPS lining and foamSuspended material: soft polyester webbing strapRail material: ABS and PCBuckle material: NylonStretchable string: elastic rubberScrew: tempered screwSpecification of Helmet Battery Bag :Size: pouch part 10.5x2.5x8cmColors: Yellow camouflage, Tan, BlackUse elastic rope to fix on the helmet.Suit for MK2 Battery CaseNote:This helmet is the simple type, not enough space for installing the tactical earphone inside.Suitable head circumference is 55 - 59cm / 21.65 - 23.23 inches.Super lightweight, not burdensome when cycling.