Thank you for viewing. This is a Pro-Bity waterproof box sheet, single size. Unopened and unused. I purchased it several years ago and stored it in a closet at home without opening it. I bought it as a spare for washing in case of bedwetting by my child, but I didn't have a chance to use it, so I'm selling it. Since it's unopened, I haven't checked the product condition. If you are concerned, please refrain from purchasing. Those who understand are kindly requested to purchase with no returns or claims. 【Waterproof Function】 This premium box sheet has a waterproof function that protects the mattress from liquids. It's perfect for families with children or pets. 【Insect Repellent Function】 It has a special treatment to prevent dust mites and fleas, which is also effective for allergy対策. 【Antibacterial and Odor-Resistant】 The antibacterial effect prevents the growth of bacteria and provides a comfortable sleeping environment. - Waterproof: Waterproof function available - Insect Repellent: Dust mite and flea prevention function available - Antibacterial: Antibacterial and odor-resistant function available - Design: Premium box sheet - Size: Single - Country of Manufacture: Planned in Japan, made in China