Klim F3 Breathbox

Add the F3 Windstopper Liner to your F3 helmet for added protection from wind and cold weather. Works with all F3 helmets: F3 Carbon, F3 ECE, F3 ECE/DOT.EASY FIT BETWEEN HELMET PADS AND EPS...

KLIM’s F3 helmet is a most-valuable riding partner and features key upgrades in its third generation. Composite shell construction means the F3 is strong and lightweight in a functional, comfortable...

We engineered the F3 Carbon Helmet specifically to reduce fatigue and improve comfort over long rides, and ultimately to challenge what “light weight” really means. A new, more aerodynamic and...