Schwalbe built the One Clincher Tire to be its ultimate race tire--a claim that was taken anything but lightly. And while it's undoubtedly a tall order, thanks to a brand-new production facility that exclusively churns out tires using the OneStar rubber compound, this lofty goal has been reached. This tire is faster, grippier, and more durable than anything Schwalbe has produced before. Oh, and did we mention that it's downright feathery as well?Schwalbe used a new compound, OneStar, to achieve extremely low rolling resistance in the One tire. Manufacturing tires using this rubber compounding requires precise control over a number of variables during production. Accordingly, Schwalbe actually built a dedicated factory with fixed vulcanization and production units that are used exclusively for the One. In other words, there were absolutely zero corners cut when it came to produce the One. The OneStar triple compound was developed to have incredibly low rolling resistance. But unlike other high-efficiency tires, Schwalbe was actually able to improve grip in both wet and dry weather over its previous top tier rubber compound, while simultaneously improving cut resistance. And with weights as low as 205g per size, this is a tire that offers tangible benefits in nearly every measurable way, without the drawbacks commonly associated with super lightweight, grippy race tires. The Schwalbe One Clincher Tire is available in either 23 or 25mm widths, and in the color Black.