SKB Corporation 6000 Single Bow Case. SKB archery cases are molded from ulra-high molecular weight polyethylene, the material specified by the U.S. military. The poly is impervious to all solvents, oils, fuels and acids and will exceed the ATA specification 300 category established by the airlines. O-Ring gaskets keep out harmful moisture. This case fits up to one bow and 18 arrows. SKB 6000 Single Bow Case.