The MM93 Track Leather Jacket is constructed from bovine leather for unsurpassed abrasion and tear resistance. Fully optimized for use with or without Tech-Air® 5, Alpinestars world leading electronic Airbag Safety System, the MM93 Track Leather Jacket is equipped with strategically positioned vents and a detachable thermal liner, allowing riders to tailor the jacket to the elements for effective climate control. This jacket also incorporates Alpinestars Nucleon Flex Pro protectors for effective impact protection. MM93 Track Leather Jacket