The Fox proframe is the latest in a line of helmets that aim to balance protection and breathability. It combines a superlight outer shell with a deep dual-density Varizorb EPS liner for an overall weight of just 735 g in size M. The huge vent holes across the chin bar maximize airflow on hot pedalling climbs, and 15 Big Bore intake and 9 exhaust ports keep your head cool during descents. The padded anti-microbial liner is also removable and easy to wash.
During our tests we found the Proframe to be quite comfortable on the head with good fit and no pressure points. It is a little heavier than other similar full-faces we've tested but the extra weight seems to be offset by the increased ventilation. A non-adjustable visor may not be ideal for all riders, and the chin strap is a bit stiff, but it's still easy to buckle in and out with gloves on.
Ventilation is excellent for a protective full-face, and the large mouth opening and chin bars offer a surprisingly unclaustrophobic feel. This was a pleasant surprise since other full-faces have been known to give claustrophobic headaches. In addition, the chin bar is sufficiently out of the way to allow for normal hearing. The only negative to the ventilation is that the visor is fixed in position and can't be adjusted. This may be an intentional design feature to optimize airflow, but it is a little frustrating for some riders.