The Pro One Tire is part of the new generations of tubeless tires. It is a truly thrilling ride. It's fast, reliable, and light. The patented MicroSkin construction makes this all possible--70 grams less weight, 15% less rolling resistance, and improved cut resistance all around. This is the absolute top model from Schwalbe! - The Schwalbe Pro One is compatible with a normal tube, but its true strengths are experienced only in tubeless form.