Continental Tour 26 Slim Inner Tube Made from durable yet lightweight butyl rubber the Tour 26 Slim Inner Tube is an ideal choice for your 26”-wheeled hybrid city bike or touring bike. Continental has made this slim sized variant to reduce rolling resistance to help you to maintain your speed, but without reducing the tube’s thickness. Features: Material: Butyl Rubber Valve Type: Separate Presta and Dunlop options Valve Length: Presta Valve: 42mm; Dunlop Valve: 40mm Tyre Compatibility: 26x1.1-1.3" ETRTO: 28-559 to 32-597 Removeable Valve: Yes Weight: Presta Valve: 140g; Dunlop Valve: 175gBuy Continental Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.