Baby Limus ProThe Baby Limus is Challenge's all around cyclocross tire designed for races with constantly changing conditions This tire is ready to take on wet sand, sticky mud, or dry, fast, packed courses This handmade tubular combines a supple, 300TPI SuperPoly casing with natural rubber tread, and a seamless latex inner tube for improved grip at lower pressures, confident cornering, and quick handing. The latex inner tube includes a removable core Presta valve.