It’s very big! It fits the full length of the back of my daybed and makes  my daybed look like a couch. It’s also super comfortable to lean on, not hard, kinda plush. Also did not have any bad chemical smell that some things I’ve bought have. Would buy again and definitely recommend. Doesn’t need a cover, the cover it comes  with had a linen kinda look in an oatmeal like color and looked good with an oatmeal like color sheet