I used these as a Boy Scout in the 70's. They are handy as hell and you have to go out of your way to break them. I got them to add to my Grab&Go bag for all occasions. You can cook a can of soup, have a cup of joe or dip a drink out of a spring. So many uses.
Used as cup/bowl on lengthy canoe/portage trip in Canada. Worked very well. Can be placed on the fire/stove. A little heavy, but durable and affordable. The handle won't come off because it surrounds the top rim of the cup and is securely fastened by the overturned lip of the cup.
Love this product. It has a nice handle which keeps your hands from getting burnt. If you have more than one, they can be stacked together to take up less space. Had to get another one for backpacking trips.