Fix-a-Flat aerosol tire inflators are the easiest and quickest way to repair a flat tire in an emergency. Fix-a-Flat is designed to seal small tire punctures in seconds and provide enough inflation to lift the rim off the ground. Fix-a-Flat seals 33% larger punctures than other aerosol tire inflators and has been trusted for nearly 50 years as an easy-to-use, better alternative to the spare tire. With its eco-friendly formula, Fix-a-Flat is safe for the user, the tire and the environment. 20 oz. size can is perfect for large sized tires.