Product Description Specifications:Application:CyclocrossProduct Line:RaceType:folding tyreTubeless System:noneTechnical Information:Rubber Compound:Vulcanized CompoundCarcass:120 tpiPuncture Protection:PPSModels:33-622 (700x33c) Dimensions:700 x 33cETRTO:33-622Air Pressure (max.):5.0 barsRecommended air pressure:2.1 - 2.7 barsManufacturer Number:01910 PPS The Puncture Protection Strip (PPS) is a special material layer between the tread and carcass of a tyre to increase its puncture resistance. Contents:1 x Weight: black | 28 | 33 mm | 33-622: 360 g Manufacturer: Challenge Tires Via Montello 18 31050 Fregona (TV) Italy info@challenge-tyres.com