TUBES: Best Butyl in the Business Our tubes reduce the mass behind the tread improving the traction and shock absorption characteristics of the tire. Look for the WTB logo valve cap on all of our tubes signifying you are riding the Best Butyl in the Business
"Best Butyl in the Business" Resists air loss and cracking due to aging Presta, 26 x 2.1 with logo valve cap (170g) Presta, 700c x 47 with logo valve cap (180g)