Klim's F3 helmet is a most-valuable partner. Composite shell construction means the F3 can be strong and lightweight in a modern, sleek design. Structure Mapped Composite construction, a new complete comfort liner system, intelligent ventilation and Klim legendary quality combine in the F3. Engineered to minimize neck fatigue and maximize impact protection. Constructed with Klim's Structure Mapped Composite base material lay up, the F3 optimizes strength in all the right areas while reducing overall weight. Up to 10% smaller external dimensions and sleeker, more comfortable fit from three shell sizes. Thirteen intake vents combine with six exhaust ports to provide optimal heat dispersion even while stationary. Features the widest, unobstructed field of view in its class, ensuring you'll never miss the epic views it takes you to. Custom EPS and internal liner systems to secure the rider's head completely. EPS, 3D Ergonomic cheek pads and liner foam are optimized for a great fit. Works in conjunction with market leading neck brace technology. Klimatek™ Fabric liner systems utilize adaptive smart foam technology and anti-microbial/bacterial fast wicking textiles. Meets or exceeds the most demanding ECE standards.