The Tracer features an all around cyclocross tread for predominately hard-packed courses. The tread remains stable at low tire pressures, rolls smooth on tarmac, and finds grip when taking tricky turns onto gravel or grass. The GRIPTON compound, meanwhile, stays supple in freezing temperatures and even delivers surprising grip over wet roots. So when you're serious about your CX racing, the cotton casing Tracer Tubular is a perfect choice. - Casing: 290 TPI - Latex inner tube - Compound: GRIPTON - 28" x 33mm, PSI 20-90, Approximate weight: 435g