Origin8 Supercell Wire Bead Fat Bike Tires, 26 x 4.0", Black/Black Wide fast rolling street style tread that extends all the way to the sidewall Large channels and siping help evacuate water quickly and proivde a plush smooth ride Wrap around tread extends into the side wall for predictable and grippy turning even when running low PSI Available in a supple dual compound 120 TPI casing or a more puncture resistant firm 30 TPI option