Engineered for use with Brompton folding bikes, the Tubolito Tubo Folding Bike Inner Tube offers comfortable, smooth-rolling performance on every journey. This high-quality inner tube was specifically designed for use with Brompton folding bikes. It features Tubolito's renowned TPU (thermoplastic elastomer) material, which is 59% lighter and has a 50% smaller packed size than traditional standard inner tubes. With the same comfort as a butyl rubber tube only with twice as much puncture protection, this is a great choice of upgrade for riders who want dependable performance on every ride. The Ultralight, Extra Durable Bicycle Tube - For a long time, the innertube has been overlooked in the bicycle industry. Tubolito are changing that. Their vision: The perfect inner tube. Street, Trail or City - Developed for the optimal cycling experience. Lightweight: 2/3 Lighter Than A Standard Tube - Every gram counts. Even more if you reduce the rotational weight. Tubolito offers an easy and achievable weight tuning. Tubolito can provide this solution by combining a new material with a self-developed production technology. Tough 2x Stronger Than Standard Tubes - Lighter and more robust. Tubolito solves this contradiction by using a new concept: manufacturing the tube with a thermoplastic elastomer, called TPU - materials known for durability and excellent damping. Their goal to transform these excellent material characteristics into an outstanding bicycle product, reducing contact areas and seams. Tubolito tubes are manufactured in Europe, and all assembly parts are sourced in Europe. This allows Tubolito to maintain very high-quality standards.