Abstract: An insulating shell for an irregularly shaped container having an integral handle, the shell made of insulating material and having a main body portion into which the container is inserted. One side of the main body portion is taller than the other side, to leave exposed the handle of the container, so it can still be easily lifted. A bottom portion of the shell has one or more holes cut into it, to counteract vacuum effect when removing the container from the shell. The insulating material out of which the shell is made is typically vinyl-coated foam rubber or foam plastic.