Product details:

One of the bestselling helmets ever, the 509 Altitude series excels across four key principles: safety, performance, fit, and style. Revolutionary design means precision fit and sleek profiling that exceeds the competition, plus innovative venting and all-day comfort for aggressive riding. The 509 Altitude Carbon Fiber Helmet is superlight with an industry-leading 100% carbon fiber construction and the easy-to-use Fidlock magnetic buckle for glove-friendly one-handed operation. Comes standard with universal camera mount Comes standard with Fidlock easy-open magnetic strap clasp Comes standard with our new Pro Series Liner and Cheekpads Comes standard with a cold weather breathbox Innovative aerodynamic channels & 8 intake/exhaust vent ports 8 sizes across 3 outer shell molds ensure excellent fit Meets and exceeds DOT & ECE 2205 safety certification standards DOT/ECE helmet weight from 1230 grams The Altitude helmet meets or exceeds DOT & ECE 2205 safety certification standards. It features an innovative dual density, interlocking EPS foam liner that provides top crash protection in the event of an accident. The front chin area of the helmet is protected by a specially designed expanded polyurethane chin insert that provides front impact protection. The outer shell is made of specially designed carbon fiber for maximum shell strength with minimal weight. In addition to its safety accolades, performance was a key focus during the development process. Innovative aerodynamic channels run across the entire contour of the helmet. These channels are integrated directly into shell and direct adequate air flow into the specially designed vent scoops. The Altitude helmet features 6 integrated vent scoops that provide necessary ventilation to keep you comfortable when riding. Overall, the Altitude features 8 intake/exhaust vent ports. And for those cold days, snap in the included cold weather breath box. The unique aerodynamic visor features a locking-top center mount that holds the visor in place and prevents unwanted visor movement. The Altitude was designed with two key fit metrics in mind: Rider fit & Goggle fit. The Carbon Fiber Altitude is available in 8 sizes from XS to 4XL (Thermoplastic Altitude available in 11 sizes from Youth small to Adult 4XL). These 8 sizes are carefully designed across 3 outer shell molds - our competitors only use 2. This provides a precision fit, while minimizing overall helmet circumference. The neck brace ready, contoured shell base provides a comfortable, yet snug feel when putting the helmet on. When the helmet is fully in place it provides an unmatched comfort fit that prevents unwanted helmet movement. The eye port of the Altitude helmet was carefully crafted to fit our 509 goggles perfectly, further improving our world famous “509 helmet & goggle combo” fit. The Altitude helmet & 509 brand goggles are two product designed to fit and perform at the highest level when used in combination. And because fit is only as good as the overall weight, the Carbon Fiber Altitude weighs in under 1100g while the Thermoplastic Altitude starts at a class leading 1260g. Finally, the always important STYLE FACTOR. The shell