Mustang's Spring Solo for the Yamaha Bolt gives you an old-school look and 21st-century quality. Installs on a solid steel frame cover. The solo has a high-quality vinyl cover, marine-grade fiberglass baseplate, and a controlled density molded Mustang foam for maximum support and comfort. An optional pouch that secures under the seat adds convenient and discreet storage to your Mustang Spring Solo setup.