Troxel Rebel Low Profile Western Helmet (Rose Turquoise, Medium) Flip Fold The Flip-Fold Fit System provides an adjustable inner liner that can be made thinner or thicker to accommodate various head shapes and hairstyles. CinchFit Pro The CinchFit Pro system naturally adjusts to the size and shape of the riders head for an unmatched level of comfort and stability. Duratec Pioneered by Troxel, the Duratec process protects the outer shell of the helmet from day-to-day dirt and scratches. Moisture-wicking Flip-Fold removable washable headliner with Air-Channel technology ASTM/SEI-certified