For long rides in the cold, the 509 Delta V Carbon Ignite Helmet has you covered. Built from hand-laid carbon for lightweight, durable protection, the secret ingredient here is the heated visor. With a heated visor keeping your shield fog-free, and Venturi Vents that pull out moist air while keeping cold air out, this helmet is ready for long days behind the bars. Fits very snug due to cheek pad compression, however, helmet does slightly pack out over time/use. Sizing up is advised.Hand-laid carbon fiber construction for lightweight and durable performancePowered helmet - 12 volt power input on left side to power shieldInnovative Venturi Vent pulls moist air from helmet without cold wind coming into helmetIntermediate Oval fit great fit in S to 3XL sizing2 shell sizes, and Dual Density EPS for optimal fitPremium Liner for a comfortable and quiet fitCustom liner kits available for a fine tuned fitIgnite dual pane heated shield for fog free performanceDOT/ECE dual certified helmet shellFidlock® chinstrap for easy on and off Starting Weight: 1780 grams