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 new 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 DOT and ECE standards.
For proper fit and size measure the circumference of your head 1" above your eyebrows and around the largest portion of the back of your head.
21 4/16" - 21 11/16" -------- Small
22 1/16" - 22 7/16" --------- Medium
22 13/16" - 23 4/16" --------- Large
23 10/16" - 24" ------------- X-Large
24 7/16" - 24 13/16" -------- XX-Large
25 3/16" - 25 10/16" -------- XXX-Large
Klim F3 is fantastically vented and has plenty of space for any goggle. Came with breath box and spare visor screws, as well as a helmet bag. My head measures 22.5"/57mm, which is right at the high end of Klim's size chart for a MEDIUM helmet. Tried it and it was too tight. LARGE fit perfectly. Only difference is the cheek pads, and you can order cheek pads to turn a MED into a LRG, or visa versa. Great quality. Klim answered the phone every time I called. Great company.