DuPont 28 X 36 White 5.4 mil Tyvek Disposable Bib Apron With Draw String Closure - DuPont Tyvek Series 273B is a 36 bib style apron with bound seams.Introducing Tyvek with the new comfort fit design. Professionals told us what they want in a protective garment. And they all agree, garments should fit better and not limit job performance.