BELL Spark MIPS Adult Mountain Bike Helmet - Matte/Gloss Grays (2021), Universal Adult (53-60 cm) : Sports & Outdoors Outdoor Recreation Cycling Helmets & Accessories Adult Helmets BELL : Amazon.com. Spend less. Smile more.

BELL Spark MIPS Adult Mountain Bike Helmet - Matte/Gloss Grays (2021), Universal Adult (53-60 cm)

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FUSION IN-MOLD POLYCARBONATE SHELL - A process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet.
MIPS-EQUIPPED AND ERGO FIT (INTEGRATED WITH MIPS) - MIPS stands for Multi-directional Impact Protection System, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts. What was once ErgoDial now has an improved dial feel and function (no longer requires a push to turn) and is more sleek and less bulky.
NO-TWIST TRI-GLIDES - Quick-adjust fasteners that help keep straps flat and properly positioned.
SWEAT GUIDE - Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear.
SPECIFICATIONS - Universal Adult (54-61 cm) and Universal XL (58-63 cm) sizes; 13 helmet vents.