Tactical Helmet w/ Protective Goggles/PJ Polychromatic Selectable We need the conversion of China Post to the United States Postal Service 7-15 days Shell material : ABS engineering plastics with high performance, hard, protect your head from injury Size adjustable,The strap is adjustable to make better fit Comes with goggles, not only for tactical activities but also can be used for cycling Head Circumference (mm):580mm-610mm