Whether it's a weekend ride around the neighborhood or an afternoon at the park, having a dependable inner tube makes all the difference, and the Cannondale 16 x 1.5-2.3" Schrader 40 mm Valve Tube is up for the job. Made from durable 0.9 mm thick butyl rubber, it offers a solid balance of strength and weight, ready to handle bumps, scrapes, and unexpected flats. The Schrader valve, the same kind you'll find on most car tires, features a removable core for easy air adjustments. Before it's packed, each tube is air-tested for 24 hours to ensure quality you can count on. A great fit for most kids' bikes, this tube is a reliable pick to keep the fun rolling when it's time to swap out a flat.