UVEX Perfexxion IIBoasting the Pentagon Dynamic Ventilation system, the UVEX Perfexxion II offers new levels of climate control and protection for riders. Improved ventilation and a soft microsense liner combine for superb breathability while the washable memory foam padding ensures rider comfort. The deepened outer shell at the neck area maximises safety while the clever cut out for pony tails makes this hat ideal for riders with long hair. The 3D IAS size adjustment