Bilt Velocity Air Pants The Bilt Velocity Air MX Pants sport a heavy duty 600D nylon construction to last season after season of hardcore use and abrasion. Stretch knit panels at crotch, inner thighs, rear yoke, back of knees and calves ensures a great all around fit. Pre-curved tailoring is cut to suit a wide range of riding positions. At the waist, riders are treated to a quick-release ratchet closure for easy adjustment on the fly. A silicon grip surface on the inner side of the waist keeps jerseys tucked and ensures the pants stay exactly where you put them. The Velocity Air Pants use YKK zippers and feature lightly padded knees. Construction: Heavy duty 600D polyester chassis Ventilation: 100 airflow mesh throughout for max airflow in hot or humid conditions Laser perforations in polyester chassis Protection & Safety: Pre-curved padded knees Triple stitching in impact areas Comfort: Stretch knit panels at crotch, inner thighs, rear yoke, back of knees/calves Quick release ratchet waist closure Silicone inner waistband maintains placement Other Features: YKK zippers Fitment Note: Pants run small. We recommend sizing up. Model is 6, 220 pounds with 34 waist wearing size 36 with a snug fit.