Our Catalan Cava is a fine wine indeed. A minimalist tire for those who want the free speed of a high volume slick but need a tire that is more predictable in looser corners. Designed to be used as a pair, or as the rear compliment to a Ros front tire for extra cornering and braking traction. -3D diamond file tread massages granular terrain for perceivably 20-30% more traction than a slick -Slightly higher volume than the Ros, giving it the same effective outside diameter, leaving geometry unchanged when pairing with Ros up front. -High carbon brevet compound for longer (normal) tread wear -Less susceptible to tread slashes than a true slick -Robusto sidewall protection for getting rowdy on the one-track, touring and the rambunctious, rugged chunk guzzler. -High TPI mystery casing underneath that Robusto, BTW -Robusto means you can ride CERTIFICATION free. -Leak free sidewalls -Designed to be inflated/deflated to tastefully low pressures: 30-40psi (700c) -Tubeless compatible -Continuous center negative dark space aeronautic deltas for pure intoxicating SPEED - 650b x 47.99mm and 700c x 42.?? - 520g and 475g