Wheel Size: 700x20/25 (622), Valve: Presta (60mm), Claimed Weight: 105g All purpose inner tube and excellent replacement inner tube for your road bike Material: Butyl tubes with renowned Continental quality Durability: Each and every inner tube passes a stringent 100% quality control inspection Design: Seamless construction, with a mould-cured vulcanisation, to ensure uniform roundness and give a smooth ride and handling