The fastest and lightest Marathon. HD-Speed-Guard provides the highest level of puncture protection. RoadStar Triple Compound for the best handling characteristics. LiteSkin sidewall. Folding tire. Sporty rubber compound with extremely low rolling resistance and exceptional grip. This belt was developed specially with racing in mind. A synthesis of special india rubber and several layers of nylon fabric offers very effective protection against penetration punctures. There is only a minimal increase in weight and rolling resistance of these tires. , Performance LineSpecifications:- Weight: 465 g (16 oz)- Pressure: 65-95 psi (4,5-6,5 Bar)- Maximum load: 95- Tread: HS 429- EPI: 67 - Inch size: 28x1.35- Etrto size: 35-622