This premier Downhill MTB Helmet from 100% has landed. The Aircraft is precision engineered with a Carbon / Kevlar composite shell providing an ultra-lightweight design. Enhance venting channels manage airflow to create one of the most ventilated DH helmets on the market 25 vents & channels -the mostventilatedhelmetavailable! Features1 Ultra-light Designfeaturing aerospace Carbon/Kevlar composite shell.2 Active Cooling Systemmaximizes airflow offering more ventilation than any other helmet.3 Comfort Linerwashable, antibacterial liner, cheek pads, and chin strap covers.4 Emergency release Cheek Padsfor quick, safe removal.5 Integrated Compartmentaccepts inflatable emergency release systems.6 Compatiblewith most popular neck brace systems.7 Titanium D-Ring buckleprovides a secure fit while saving weight.8 Perfect Fitengineered with 2 Shell Sizes and 3 EPS Sizes.9 Adjustable Visorwith machined light-weight aluminum screws.10 Durable helmet casewith integrated goggle pocket included. Helmet Size U.S. Hat Size Inches CM Youth Small Youth Medium Youth Large Adult X-Small 20.9 21.3 53-54 Adult Small 21.7 22 55-56 Adult Medium 22.4 22.8 57-58 Adult Large 23.2 23.6 59-60 Adult X-Large 24 24.4 61-62 Adult XX-Large //
