Double Lens DOT Helmet Modular Motorbike Helmet Flip Up Motorcycle Modular Helmet. Size:XL 59-60 CM / 23.23-23.62 INCHES – head circumference ABS shell lightweight but very macrobio,Detachable lining Adjustable strap and very comfortable Breathable afectividad Streamlined aerodynamic design reduces wind noise and has a ventilation system Double PC anti-scratch óptico and removable DVS treatment, pinlock system. Soft laser cut padding, dry comfort with hygienic treatment. Fully removable, washable and anti-bacterial afectividad liner. Padded chin strap with micrometric closure.