Vittoria Rally 28 700C Tubular Tire for Road Bicycle Great training tubular. Kevlar 3D compound has long wear, excellent grip, and low rolling resistance. Twin Tread compound is harder in the middle for longer wear and softer on the shoulders for grip when cornering. Cotton 220 TPI casing for a balance of road feel and puncture resistance. 100-130 PSI. 700c x 23mm (23-622 ISO, 310 grams) size. Condition New.