Details Redefine your comfort zone with the Specialized Gambit Helmet. To make a Downhill-certified full face helmet with the ventilation and fit of a half shell, the Specialized development team took a fully integrated approach when creating the Gambit. Every component was engineered utilizing a comprehensive approach resulting in truly breakthrough performance where the Gambit delivers more than the sum of its parts. Construction Combines a lightweight carbon fiber shell, structurally specific polycarbonate backing, and five optimized pieces of targeted density foam (patent pending) for reduced weight, optimized fit, and increased ventilation. ASTM DH (1952) certified. Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. Fit Tune a more precise, personalized fit thanks to Gambit's adjustable Integrated Fit System that accommodates variations in head shape and occipital base. Occipital base adjustment personalizes fit for comfort and allows you to tune helmet angle to ensure that your helmet and eyewear stay perfectly synched. 4-position adjustable cheek pads provide fit refinement for any head shape. Ventilation Increased airflow and improved ventilation from the SBC Integrated Fit System does away with the excessive padding of a traditional full-face friction fit. MIPS SL with proprietary perforated backing integrates MIPS technology within the helmet padding and reduces moisture retention while increasing breathability. Computational Fluid Dynamic design integrates the maximum volume of internal channeling for optimal airflow through the helmet. 4D brow cooling provides a gap between the helmet and forehead, drawing airflow into internal air channels at every speed. Details Integrated, fixed visor with a breakaway feature provides a wide field of view while protecting against trail debris. This helmet is ANGi ready, with a fit system mount designed for easy integration with the Specialized ANGi crash sensor. Helmet Size S = 51-56cm / 20-22" M = 55-59cm / 21.75-23.25" L = 58-62cm / 22.75-24.5" Weight 640 grams (Medium) Specialized Gambit Helmet