The SKB Oblong Case is lightweight and virtually indestructible. It features a hard shell and is so durable that SKB offers an unconditional lifetime warranty to the original owner. Molded plastic. Molded-in bumpers add strength. Recessed areas for no-slip stackability, rubber feet, plush lining. SKB is a premier supplier of instrument and gear 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 it, they will repair or replace it at no cost to you.