Managing city streets and traffic is easier with the Smith Transit MIPS helmet, built for comfort, protection, and visibility. A lightweight in-mold shell with 18 fixed vents keeps airflow consistent, while the Mips® safety system helps reduce rotational forces from angled impacts. U-lock-compatible vents and a dedicated mount for the rechargeable Transit Light (sold separately) add convenience for daily commuting. Lightweight in-mold construction Mips® Safety System reduces rotational forces caused by angled impacts to the head Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older as well as CE EN 1078 and AS/NZS2063 Adjustable dial fit system for a easy, on-the-go size adjustment 18 fixed vents for consistent airflow Removable and rechargeable Transit Light compatible (sold separately) Performance comfort liner Lightweight, low-bulk single-layer webbing Center rear vent compatible with rechargeable Transit Light (sold separately) Weight (Size M): 310 g Information provided by manufacturer