Kids' Smith Optics Zip Jr. MIPS Bike Helmet 71673643149 School, park, or neighborhood trails, kids and bikes go places. No matter where their wheels take them, the Smith Zip Jr. bike helmet delivers enhanced angle impact protection with MIPS® in a lightweight design that kids want to wear. Our dial-adjustable VaporFit™ gets the fit right every time. There's a low-profile lining for extra comfort plus plenty of vents to keep the air flowing and kids cool. Just buckle 'em up and start pedaling. Features Lightweight, low-bulk single layer webbing Weight: (Size XS, MIPS®): 8 oz / 240g Lightweight in-mold construction Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head VaporFit™ dial adjustment system offers 270-degree fit adjustment with the turn of a dial 21 fixed vents for consistent airflow Designed for ultimate integration with Smith performance eyewear for maximum comfort, venting and storage convenience Performance comfort lining AirEvac™ ventilation system integrates with Smith goggles and eyewear for fog-free lenses Kids' Smith Optics Zip Jr. MIPS Bike Helmet