② Reliable Waterproofing! Waterproof sheets, used, set of 2. The color is yellow. Single size, fitted sheet type, 100 x 210cm. I am currently using these, but I bought too many, so I am selling the ones I don't need. I still have several, so please comment if you need more. These have been washed before being listed. They were used for about 1-2 months. The sheet fabric is like a softened Velcro, and it's the kind of fabric where even if you shake the sheet, debris doesn't easily come off. When listing, I laid them flat and, while shining a light, tried to remove small dust and debris with tape or my fingers, but there may be some overlooked dust or small debris. Please refrain from purchasing if you are concerned about this. I have lowered the price, but to fit the package in a 60-size box, I will tightly wrap the product with hand wrap, making it smaller, so there may be creases. Please understand. All the sheets I have have a similar feel, with only slight differences in the elasticity of the elastic bands. My impression of using them is that I am satisfied with the waterproofing, but the store recommends hand washing. When I put them in the washing machine to spin, the weight becomes uneven, and I have to adjust it to get the washing machine to run properly. Even considering that hassle, I prioritized the waterproofing, so I was satisfied. Images 6, 7, 8, and 9 are images that were posted by the store where I bought them. Please refer to them. The product being sold is yellow. Please note. Thank you.