The built-in toughness of the 4.5 oz Nomex IIIA coverall offers uncompromising features that you expect from a leader in the flame resistant market. Our durable coveralls are designed to provide maximum comfort, protection and plenty of features. From our reinforced stitching to our covered snaps, Lakeland coveralls made with Nomex IIIA have details that you won't find in any other coverall.