Donaldson Company is a worldwide manufacturer of expanded PTFE membrane called Tetratex®. Our high performance laminates are waterproof and breathable. When used in garments, the laminate supplies the wearer with superior comfort and durability. These materials span a wide variety of markets and uses from the Military to Recreational wear. There is no such thing as bad weather, just bad clothing. Donaldson sets the standard in performance fabrics.