I continue to purchase these covers for my oversized chair and also one for my oversized ottoman. They fit quite tightly but perfectly. I would think if you had a smaller chair that they would show the wrinkles but in the large chair they do not. They wash up nicely and definitely have kept my chair looking new with two large golden retrievers who shed constantly. I purchased the off-white and have even used bleach on these covers after they get older to ensure they remain spot free, not possible with other colors, of course  Wash in cold, dry low or hang dry.