Military grade camper shell, canvas covers. I have 2, one is in great condition and the other is in fair with 2 small holes. Each appear to be 5' 6"ish wide by 7' 6" long with about 30" side walls. All corners have heavy zippers. You will need to build your own support frame work. One have a tag bundled into is reading "CUCV M1028". A google search lead to a 1 ton dually, built by Chevy for the military.