Foss Inner Tube 26x1.95-2.25" Presta Valve 52mm Mountain Hybrid Tour 26" Bike Includes Foss EFT Inner Tube 26x1.95-2.25" with 52mm Presta Valve and Foss Rim Strip Tube material creates an air-tight seal around the object when punctured, preventing an immediate loss of air pressure. Environmentally Friendly Material: Made from Thermoplastic Elastomer compound (TPE), recyclable with other TPE products. Light Weight: 30% lighter than standard rubber inner tubes of the same size. Awards: Winner of iF Material Award 2010, Champion of Wheel Set Group, Taiwan Innobike 2010.