Proframe moth helmet the fox proframe helmet is the lightest and most breathable full face helmet we have ever created designed to perform at the highest levels for aggressive all mountain riders and enduro racers it packs dh certified protection into a superlight shell via our patent pending fully integrated chinbar with 15 big bore intake and 9 exhaust vents the proframe helmet offers open face level airflow and breathability to keep you cool on even the longest and most challenging climb