simple, clean lines and bomber durability of the Smith Holt Helmet put it in our rank of best sellers year after year. With a convertible pad kit that lets you use it as a bike helmet in the warmer months and AirEvac 2 ventilation to keep the cool air flowing year round, the Holt is the kind of bargain you can't afford to pass up. Product Details Construction Bombshell Construction – Bombshell construction uses an injection molded ABS shell to withstand high impacts with unparalleled durability and dent resistance. Ventilation Airflow Climate Control – Strategically placed vents give you easy climate control in all conditions. Vent placement maximizes airflow and heat exhaustion in warm temperatures while minimizing undesired cold air drafts Fit Convertible Pad Kit Included for All-Season Use Additional Features Removable Bombshell Earpads – Smith earpads, with their inner surface of technical materials, provide a comfortable seal from the wind and weather on even the stormiest days. For a warm spring day, remove the earpads entirely to reduce weight and maximize cooling. All earpads are fully removable and machine washable. Removable Goggle Lock Safety Standards ASTM F 2040 CE EN 1077:2007 Class B CPSC CE EN 1078 Specs Material: ABS Helmet Style: Half Shell Helmet Venting: Fixed Venting Audio: Not Included Removable Ear Pads: Yes MIPS: No Weight (g): 550 Warranty: Limited Lifetime