BELL SIXER MIPS HELMETHelmets are the most important part of riding a bike. Helmets protect your head from impacts. The Bell Sixer takes protection to the next level with MIPS technology that protects your head from rotational energy from certain impacts. This well ventilated helmet features Bell's Float Fit Race system that offers a custom fit with three-way adjustability, Sweat Guide that pulls sweat away from eyewear, Progressive layering that manages the transfer of energies after some impacts, and an integrated breakaway camera mount. Features MIPS for better impact protection Float Fit Race offers three-way adjustability No-Twist Tri-Glides keep straps flat and properly positioned Sweat Guide pulls moisture away from brow pad and eyewear Lightweight at only 410 grams Excellent ventilation with 26 vents and dual flow ventilation Sizing How to Measure: With a cloth measuring tape, find your heads circumference just above the ears. Helmet Size Small Medium Large Extra Large Head Circumference20"-22"52cm-56cm21. 6"-23. 2"55cm-59cm22. 8"-24. 4"58cm-62cm24"-25. 6"61cm-65cm | Bell | Sixer Mips Helmet Men's | Size Small In Matte/gloss Black Camo