Make Your Own Stationary Bike: Bring your bike inside for an indoor cycling workout! The Sportneer Indoor Bike Trainer fits bikes between 26-29 inches, and is also compatible with 700C bikes. You wont have to break the bank to invest in new equipment. Simply use what you already own Smooth Silent Spinning: Break a sweat without disturbing those around you! The fluid, high-quality resistance wheel ensures easy spinning thats whisper quiet.