Fox Racing Flexair Union Men's Off-Road Motorcycle Pants - Black / Size 34 The Fox TruMotion fabric used exclusively on the FLEXAIR pant has the highest abrasion durability test rating of any stretch pant in motocross, 40% higher than the next best stretch pant on the market. Durable: The Fox TruMotion fabric used exclusively on the Fl With precision-engineeblack laser perforations the FLEXAIR features targeted ventilation to keep the rider cool