Challenge Dune Pro Tubular Cyclocross Tire

The Dune excels in sand, hardpack, and even ice. The center of the tire features a small file or "pyramid" tread with bigger edge knobs for cornering. Offered here in the classic tubular "look" with black tread and tan sidewalls. Each Dune features a seamless latex inner tube with removable valve core for easy use with Challenge Extenders when used on deep tubular rims.   claimed 415 grams PPS puncture prevention 700x33c 300 TPI Super Poly casing TECH NOTE: this is a tubular bicycle tire with a captive (stitched-in) latex inner tube (also called a "sew-up".) It must be glued or taped onto a tubular rim for safe use. It will not work on a traditional clincher wheel/rim. Proper setup is essential for your safety - if you are not qualified to install tubular tires, please seek expert guidance first.