GP Air is positioned as Troy Lee Designs' RIDE category which is targeted at anyone who throws a leg over a bike. Ride gear generally has the highest durability and protection in the TLD gear line and is "multi-functional" as it will be aimed at recreational track riders along with trail riders. Weight: 1.4 pounds, 645 grams. 600D polyester fabric provides durability in key areas. 320D mesh fabric used to help maximize ventilation on GP AIR models. Stretch yoke in rear seat and groin areas to enhance mobility. Silicone on inside waistband for added jersey grip. Ratchet waist adjustment system. TLD A.K.T (articulated knee technology). Inside knee leather panels. Fabric is certified Blue Sign® approved.