Continental Sprinter Tubular Tire The new nano-sized Black Chili compound particles make this best-selling product from Continental even better. According to Continental Black Chili provides the ultimate combination of tire improvements- -more points of contact with the road due to more particles per square millimeter enhancing tire grip -reduced tire wear due to more tightly bound particles -more tire flexibility which lowers rolling resistance Light enough for racing and tough enough for training. Good puncture protection with 3 layers of Kevlar casing. (22-622)