The F5 is the ultimate all-day helmet. Designed 100% from the ground up, only the best designs, years of rider feedback, testing data & cutting-edge technologies are integrated into this revolutionary lid. Combining extremely low weight, intuitive venting, & next-gen safety features, KLIM has engineered the F5 to provide the best possible riding experience in the most demanding environments, all day. Features Full Klim® carbon fiber shell One of the lightest helmets in the industry Extra large eye port for maximum field of vision Dual density EPS Wind tunnel tested Fid-Lock® strap closures (extremely easy to take helmet on & off) Ventilation Most ventilated helmet in the industry 18 intakes & 8 exhaust vents Direct Vent EPS design Designed to intake air at speed / exhaust heat while at low speeds or stopped Safety Shell structure designed for maximum strength while remaining lightweight Neck brace compatible Exceeds ECE certifications Comfort Focus on fit Anti-microbial & anti-bacterial materials Moisture-wicking Drylex® comfort liner 3 shell sizes & 3 EPS sizes for the best fit & maximum comfort to fit your head like a glove Included Helmet bag Breath box Windstopper® liner Extra peak visor/hardware