Polyester plyfiberglass belted, black letter. Up to 20" of contact patch from Sidebiter to Sidebiter. Full 6-ply lower sidewall with cut resistant compound. Directional, self-cleaning tread design. Circumferential grooves allow flecing for better rock crawling. New tread pattern with 23 degree lugs and extra large Sidebiters for extra traction and protection. Up to 46 inches.