Main Features Continental folding tire 700x23 - 25 - 28mm blackHigh-end training tire with high puncture resistance thanks to its triple-layer PolyXBreaker casing and reinforced sidewalls using DuraSkin Sidewall technology against cuts and abrasions. Excellent durability combined with light weight and easy rolling. Continental Folding Tire - Gatorskin 700x23 - 25 - 28mm blackHigh-end training tire with high resistance to punctures thanks to its triple-layer PolyXBreaker carcass and its reinforced sidewalls using DuraSkin Sidewall technology against cuts and abrasions. Excellent durability combined with light weight and easy rolling. Available in widths of 23, 25 and 28mm.