This SKB alto sax case has a compact design made from molded plastic. It's heavy-duty yet lightweight and has an easy-carry handle. SKB is a premier supplier of gear and musical instrument cases. SKB builds their products with military-spec, ultra-high molecular weight polyethylene and premium hardware. All SKB hardshell cases are unconditionally guaranteed forever. That means that if you break the SKB-140 case, SKB will repair or replace it at no cost to you.