Smith Ski Helmets are an extension of the patented Smith Ski Goggle ventilation system. Smith Ski Helmets enhance the anti-fog properties of the Smith goggles by pulling air through the goggle and venting it out of the perfectly aligned air channels in the helmet. These Smith Ski Helmets are the ultimate in protection, style and comfort. The quality construction is backed up by a Lifetime Warranty from Smith. Helmets are available in lots of sizes, and every helmet can be adjusted for fit and ventilation. Smith even offers headset options for Bluetooth or wired connections to your iPod or phone. Smith Ski Helmets are absolutely the best protection you wrap around your head; they are incredibly comfortable; and they look great.