We call it a tool case but it functions as so much more! It is made of black PVC/abs/aluminum panels and round aluminum frame . The bottom compartment can securely hold almost anything that fits with the customizable, self modeling, high density foam, and there is a tool pallet that can be used and/or removed by simply pulling it out. It even has removable egg shell type foam in the lid. As a brief case ,As a tool case ,As a carmer case ,As a instrument case ,all ok ,If only you want ,its all can enough you .ITS A AMAZING CASE !!!