All over printed polyester with nylon fabrics provide great looks and long lasting durability. Strategically positioned Spandex panels deliver free movement without restraints. Buckle and waist adjusters can reduce waist size up to 2 to provide a custom, secure fit. Ergonomically structured knees fit best in attack position and offer room for knee braces. Genuine leather inner knee panels resist burning and insulate knees from hot exhaust pipes.