Stop-A-Flat 2.125 Tube, Yellow, 20-Inch

These Stop-A-Flats come in multiple sizes. Follow the SIZE: chart to help choose the SIZE: you need. No more wasting your hard-earned money on tubes. With the Stop-A-Flat you will never need to change an inner tube again. When you replace your tubes with Stop-A-Flat it will save hundreds of dollars and countless hours. The Stop-A-Flat has many uses and applications for all wheeled vehicles including bicycles, trailers, joggers, strollers, and more! Made from Ethylene Vinyl Acetate (EVA Foam). EVA foam is safe and resilient and is used in many everyday items including sneakers and fitness mats. Manufactured through closed cell construction, they are light-weight and waterproof. These tire inserts are NOT compatible with Raleigh or Schwinn bicycles produced prior to 1980.