When the job demands full coverage without added insulation, Big Bill flame-resistant unlined coveralls and bib overalls deliver reliable protection and all-day comfort. Built for workers who face flash fire and electric arc hazards, these garments provide durable, arc-rated safety without the bulk, making them ideal for warm climates, indoor facilities or high-mobility work environments. With rugged fabrics, reinforced stress points and practical features that support long shifts, they help you stay protected while staying productive. Our collection includes lightweight and midweight flame-resistant coveralls designed for breathability, unlined bib overalls built for range of motion and hi-vis options for increased visibility in low light or high traffic areas. Convenient pocket placements keep tools close at hand, while adjustable straps and articulated designs support natural movement through bending, climbing and lifting. Whether you need dependable protection on the jobsite or a breathable layer for hot weather, Big Bill unlined coveralls and bibs give you the versatility to work with confidence. Every Big Bill unlined coverall and bib overall is arc-rated and fully compliant with ASTM 1506, CSA Z462 and NFPA 70E. Tested to high standards and built for long-lasting performance, they deliver trusted flame-resistant protection for the life of the garment.