Design & Technology: Time-trial bike helmet designed for optimal performance MIPS(R) Brain Protection System reduces rotational forces caused by angled impacts to the head for added protection Zonal Koroyd(R) coverage for lightweight, energy-absorbing and ventilated impact protection VaporFit(TM) dial adjustment system offers 270deg fit adjustment with the turn of a dial Ionic+(R) antimicrobial lining offers sweat-activated odor control for maximum comfort Magnetic visor with option of ChromaPop(TM) or clear lenses, ChromaPop(TM) lenses enhance contrast and natural color to make the details pop Low-profile Y-strap divider offers a secure fit to reduce wind noise and aerodynamic drag Five strategically placed vents provide optimal airflow Lightweight, low-bulk single layer webbing Includes a Smith(R) hard case with a spare lens holder, a ChromaPop(TM) lens (installed), and a bonus clear lens Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Weight: 14 oz. Style: JETSTREAMTT