Heavy-duty. Deluxe plush interior. Features protective bumpers, full-length neck support, and rigid EPS foam interior (the same quality as found in bicycle helmets) to prevent instrument from moving. SKB is our premier supplier of instrument and gear cases. SKB builds their products with military-spec, ultrahigh molecular weight polyethylene and premium hardware. Their Lifetime Warranty is a reflection of SKB"s confidence in everything they manufacture. 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.