This hardshell SKB alto sax case is made from molded plastic and has a recessed outer accessory pocket. Plush lining cradles your instrument in security. SKB is a premier supplier of musical instrument cases. SKB builds their products with military-spec ultrahigh molecular weight polyethylene and premium hardware. All SKB hardshell cases are unconditionally guaranteed forever. That means if you break the SKB-440 they will repair or replace it at no cost to you.