It's tail light-compatible design offers dedicated space for the Transit Light, setting you up for increased visibility at any time of the day. Mips® impact technology adds peace of mind for the unexpected. It's loaded with little details like U-lock-compatible vents that make locking it with your bike a snap, a removable visor and uninterrupted air flow to keep your head cool and comfortable.Product DetailsProtectionLightweight in-mold constructionMips® Safety System reduces rotational forces caused by angled impacts to the headComplies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older as well as CE EN 1078 and AS/NZS2063Fit / IntegrationAdjustable dial fit system for a easy, on-the-go size adjustmentFeatures18 fixed vents for consistent airflowRemovable and rechargeable Transit Light compatible (sold separately)Performance comfort linerLightweight, low-bulk single-layer webbingCenter rear vent compatible with rechargeable Transit Light (sold separately)We