This waterproof cot cover provides peace of mind even in case of bedwetting. The surface is 100% skin-friendly cotton! The fluffy pile fabric feels comfortable. My daughter also uses a different color, and it's very easy to use because you can write a large name on it. In the third photo, it says "set of 2," but this is a single yellow cover for sale. I opened it when I took it out, and it has been stored at home since then. It is unused. I think the size is suitable for children aged 3 and up. How about it for preparing for nursery school?