Single-size fitted sheet. Only the sheet in the third image is for sale. According to the official description, it can be used with a futon, but I have only used it on a mattress. I used it for about three months, rotating it with other sheets. There is one small spot stain (as shown in image 2). Since it's a wide area, there may be other spots that I haven't noticed, so please refrain from purchasing if you are concerned about minor details. Fabric: 100% polyester All-around elastic