HEMI-SPHERE... IT MUST BE GOOD.Bold with plenty of road traction, the Specialized Hemisphere Bike Tire is ready to roll. Promised to perform on both streets and bike paths, this tire is ready to take you all over the globe!FEATURES Casing: 30 TPI Bead: Wire Compound: 70a Flat Protection: Flak Jacket 26 x 1.95"; psi 35-65; approximate weight 880g 700 x 38mm; psi 75-100; approximate weight 820g