Cold Weather Army Mechanics Coveralls: Very well made with heavy weight OD material with soft shiny lining on inside that covers chest, shoulders, and arms. These coveralls look like they would be perfect for temperature between 400 to 650 . Complete with heavy brass zipper, slit on both sides of hips so you can get keys, knife, etc. out of your pants without taking coveralls off. Coverall also has 1 large pocket with zipper and elastic cuffs on legs and arms to keep out cold and dirt. Coveralls run very large and a person who wears a medium can wear a small easy with room to spare.