This 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 resistanceTCS Light Fast-Rolling: Lightweight casing with TCS aramid bead and Dual Compound DNA rubber (60a center/50a sides)Item SpecificationsColorBlackWeight530Tire BeadFoldingISO Diameter622 / road / 29"ISO Width40Labeled Size700 x 40Tire TypeTubeless Ready ClincherTire Diameter700cIntended UseGravelDefined ColorBlackTPI60 WTB Nano Tire Tires UPC: 714401105782