Michelin WildGrip'R2 Advanced Gum-X Reinforced Tubeless Ready Mountain Bicycle Tire (Black - 29 x 2.35) Designed to excel in both dry and muddy terrain Crown tread blocks are redesigned to offer a balance of grip, efficiency and mud-shedding Shoulder tread blocks are retuned for consistent, efficient cornering Gum-X compound for balanced efficiency and grip Bead To bead protection improved the durability of the casing and reduces the chance of blowouts due to pinched tubes or sidewalls