The future of all mountain protection the fox proframe libra full face helmet is the lightest and most breathable full face helmet fox has ever created designed to perform at the highest levels for the aggressive all mountain rider and enduro racer it packs dh certified protection into a superlight shell via their patent pending full integrated chinbar with 24 big bore vents the proframe offers open face level airflow and breathability to keep you cool on even the longest and most challengi