The Rain Poncho for Wheelchair Users, with its extra-large and single-zipper front opening, is designed to be easy to put on and take off while one is in the chair. Although there are different types, all are reportedly waterproof and machine washable. Some are thin and simply serve as rain protectors, while others are also interior-lined to provide added warmth. Some merely cover the person (from head to toe), while others are designed to hang over much of the chair-both the sides and the back-and have a weighted bottom for wind resistance.