Vittoria Bomboloni Fat Snow Tire 27.5x3.0 BlackWith Vittoria's Bomboloni Fat tire, snow-tire technology from the automotive industry is now brought to bicycles. With its square-step ramps and share squared edge it cuts for grip in compressed surfaces without losing its fast rolling ability. Alternating sipe angles provide tactile grip on slippery surfaces, such as rocks, roots, and pavement.8022530002707