Say goodbye to the industrial-looking stamped metal seat box bases that come standard on all Sprinters. Made from the same durable Chilewich material that our mats are constructed from, they come in two sizes. The shorter of the two sizes works with seat bases that came from the factory with seat swivels already installed. The taller of the two sizes work with seat bases that did NOT come from the factory with seat swivels. Our covers attach to the seat box bases using adhesive-backed hook and loop (supplied) and are sold in pairs. Fire extinguisher mounting brackets can be easily removed (temporarily), then reinstalled directly over the seat base covers. Each piece is side-specific.