The Kenda Krusade is an all terrain tire that provides extra grip on slick surfaces or loose dirt. It fits the Defiant Fat Tire Folding Electric Bike or most 20"" x 4"" bicycle wheels, and it is meant to work with a 20"" x 4"" inner tube (sold separately). Tire may not have red and white lettering on the sides, and sidewall lettering may vary.