Non-Surgical Poly-Coated Isoloation Gown, Open-Back, Over-the-Head, Non-Sterile, Yellow, Universal Size. This gown is made from soft, spunbond, yellow polypropylene coated with a layer of polyethylene (plastic) material for comfort and protection. It has an over-the head neck, half-back style with thumbhooks and is available in a universal size.