Rider-matched picks
Size-matched helmets picks for women mountain bikers, with fit and feature priorities curated for how women mountain bikers actually ride.
Open the helmets calculatorWomen mountain bikers should focus on reach rather than standover height when selecting frame size — modern MTB geometry means standover is rarely limiting, but reach determines how confidently you can descend technical terrain and how efficiently you climb. Women typically need shorter reach values than men of the same height due to proportionally shorter torsos, which is why sizing down one frame size on a unisex bike often works. However, purpose-built women's MTBs from Juliana and Liv already account for these proportional differences, so use their size charts directly. Suspension is equally critical: lighter riders need softer spring rates and lower air pressures than stock settings, which are typically tuned for 170-180lb riders. Women's-specific models come with appropriate spring rates, but on unisex bikes you'll need to reduce air pressure by 15-25% from stock recommendations. Narrower handlebars (740-760mm vs 780-800mm stock) improve leverage for riders with narrower shoulders, and shorter-reach brake levers ensure reliable stopping power with smaller hands.
Measure head circumference at the widest point across the forehead. Most brands size: XS (50–53 cm), S (53–56 cm), M (56–59 cm), L (59–62 cm), XL (62+ cm). Kids helmets typically start at 47–50 cm. Always try before buying; fit varies by brand.
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Giro
S 51–55 cm, M 55–59 cm, L 59–63 cm
Bell
S 52–56 cm, M 56–60 cm, L 60–64 cm
Smith
S 51–55 cm, M 55–59 cm, L 59–63 cm
Poc
S 50–54 cm, M 54–58 cm, L 58–62 cm
Lazer
S 50–54 cm, M 54–58 cm, L 58–62 cm
Kask
S 50–54 cm, M 54–58 cm, L 58–62 cm
Troy Lee Designs
S 53–56 cm, M 56–59 cm, L 59–62 cm
Abus
S 52–58 cm, M 58–64 cm
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