The DuPont Tychem® 4000 Coveralls provide a puncture and tear resistant barrier against a wide range of chemicals. These coveralls are designed with comfort and safety in mind. The elastic wrist and ankles allow for a tight yet flexible fit, while the storm flap covered zipper prevents any substance intrusion. Taped seams provide strong chemical resistance against heavy liquid splashes. A sewn seam is covered with a strip of compatible chemical-resistant material through heat sealing. Attached hood with elastic around face opening. Storm flap covers zipper which can be sealed by the wearer with adhesive strip to prevent intrusion at zipper. Elastic opening at wrist and ankle for tighter fit.