The Source MIPS combines advanced performance and protection in a sturdy design ready for the trail. With its deep coverage and aggressive ventilation from 17 openings, along with deep internal channels, it keeps you cool even during rough riding. Featuring the comfort and secure feeling of the Roc Loc® 5-Fit System with integrated MIPS®, as well as an adjustable moto-style visor, this helmet is perfectly equipped for fun and adventure. Size 55-59 | Weight 340g