WTB Nano Tire - 29 x 2.1, TCS Tubeless, Folding, Black, Light/Fast Rolling, Dual DNAThis is the #1 tire choice for Tour Divide, the longest mountain bike race in the world stretching from Canada to Mexico along the Rockies. It features an elevated centerline that rolls effortlessly on hard surfaces, numerous micro knob working edges providing lateral traction and predictability, and a voluminous casing designed to go the distance. Long lasting tire with a rounded profile and low rolling resistance Product Specifics Color: Black