Waterproof sheet, waterproof box sheet. One sheet. I used it for about six months because my grandchild was going to sleep with me, but it turned out I didn't need it at all. Purchased for 2370 yen. It has been stored with house cleaning, but it has not been ironed and will be handed over as is. Please understand. There are no stains or scratches, but there are fold marks. [Sleep soundly until morning] Waterproof box sheets are recommended for those who want to sleep soundly and are worried about bedwetting, menstruation, night sweats, drool, etc. The waterproof fabric on the back protects the mattress and futon from moisture and dirt. [Easy to install & prevents slipping] The 360° all-around rubber specification makes it easy to put on and take off. The gusset is 30cm, so it can completely cover a thick mattress with a thickness of 25cm, and there is no need to worry about slipping, so even those who sleep restlessly can rest assured. I purchased two for washing. I will not sell them together. Thank you.