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 Rosé front tire for extra cornering and braking traction. -JFF means Just For Fun, but not only for fun- these tires are equally equipped for long days locked in the pain dungeon as they are for a Sunday tour of Portland's vegan doughnut shoppes. -JFF is our most accessible offering; think of it as the industry standard in terms of casing and rubber spec. This is an approachable luxury- the cubic zirconia of our catalogue. -3D diamond file tread massages granular terrain for perceivably 20-30% more traction than a slick -Slightly higher volume than the Rosé, giving it the same effective outside diameter, leaving geometry unchanged when pairing with Rosé up front. -Carbon compound for longer (normal) tread wear -JFF more durable casing than our RACE offerings. Fixing flats, while character building, has never been fun -Less susceptible to tread slashes than a true slick -Zero sidewall protection and no puncture protection on top for premium ride quality -Leak free sidewalls -Designed to be inflated/deflated to tastefully low pressures: 25-35 psi (650b); 30-40 psi (700c) -Tubeless compatible -Continuous center negative dark space aeronautic deltas for pure intoxicating SPEED -27.5 x 2.25” (650b x 57mm), 650b x 47.99mm, 700c x 42.??mm and 700c x 38.?? -565g, 510g, 465g, and 360g -Black and Tan sidewalls available, JFF -Tires packaged and sold individually ***700c x 38.??*** We designed this tire to be a large volume ROAD tire suitable for light, groomer dirt roads, but at this low volume we don't really think of it as a gravel tire. The sizing is sorta funny, it is badged a 700c x 39, but on most modern rims it's been measuring a little smaller upon initial mounting, more like a 37-38mm but after some use these stretch out to almost a 39mm width. *By Ultradynamico