No more flats! Slime's emergency tire sealant seeks out and instantly seals tread area punctures in automotive tires up to 1/4 in. When a puncture occurs, our patented sealant is carried directly to the source. The pressure of the escaping air forces the particles into the opening, where they build-up and intertwine to form a long lasting, flexible plug. Instantly, air loss is blocked and a flat tire is prevented. Install in any of your highway vehicles (including cars, trucks, SUVs, RVs, trailers and much more) when you get an emergency flat tire to get back on the road quickly and safely.