Brother to our 5.5 factory racing pants, the GPX 4.5 is unbeaten in its price class. Promising a pre-curved performance fit – straight out of the box – these pants now also have a lighter, more breathable construction. They are made of Ripstop stretch with X-Flow mesh panels, offering durable and ventilated protection with 3D molded, fully floating knee cap reinforcements and two-point knee ventilation. The seat area is made of 1200D which makes it very durable, they have multi-row stitching, and the dual layer Amara inner leg is soft yet tough and grips well. The new, shorter micro adjuster waist belt with 180 ? silicone grip and YKK highest quality zippers ensure a solid fit. Features Pre-curved performance fit New lighter and breathable construction Ripstop stretch and X-Flow mesh panels 3D molded, fully floating knee cap reinforcement 1200D nylon, heavy duty seat material and Amara inner leg YKK zipper and multi-row safety stitching Two-point knee ventilation Waist with micro adjuster and 180 ? silicone grip Anti-odor MoistureCool mesh lining