We at Schwalbe believe that Tubeless is the tire technology of the future! A truly thrilling ride. It's fast. It's reliable. It's light. The patented MicroSkin construction makes this all possible. 70 g less weight, 15% less rolling resistance and improved cut resistance all around. This is the absolute top model from Schwalbe! Tubeless tires offer clear advantages in speed, comfort, grip and puncture resistance. There is no friction between the tire and tube. This crucially reduces the rolling resistance. It is even lower than in super-light competition tires. Tubeless can be ridden at lower air pressure.- without sacrificing performance! This brings significant advantages in comfort, but also significantly more control in critical situations and on rough trails. Tubeless Systems provide very high puncture resistance. Sudden loss of air through bursting tubes or valve tear off is impossible. At the same time puncture protection liquid seal punctures within a few tenths of a second while riding. You can also use the Schwalbe Pro One with a normal tube, but its true strengths are experienced only in tubeless form. OneStar compound MicroSkin, TL Easy 235 g 70 kg