I bought these two flat sheets to use on two twin beds that get pushed together to make a king. It will be made up this way only when guests come to visit and want to share a bed, so maybe a couple times a year. They are very lightweight, which is fine as we are in Florida. They are  very easy to wash and dry because their weight is so light, plus they don't wrinkle. I wouldn't buy these for every day use, but for the occasional use I think they are perfect.