▶ Please refrain from price negotiations. Prices are subject to change over time. ▶ I will not respond to comments asking for price reductions. ▶ This item has been handled by someone else. Please refrain from purchasing if you are sensitive to this. ▶ If possible, I may remove the item from its outer box and ship only the contents via mail. Please be aware of this beforehand. New, unused Single size Retail price: 2680 yen Set contents: One waterproof box sheet 【Material】Surface: 100% pile cotton, Back: Polyurethane coating. Features a 360-degree all-around elastic box design that securely wraps the mattress. Easy to put on and take off, and compatible with mattresses approximately 3-28cm thick. ※ Size Note: Due to the nature of the product, there may be slight discrepancies between the displayed size and the actual size. Please understand this beforehand. Please make sure to check the size of your bed or mattress before purchasing. (Reliable waterproof design) This waterproof sheet has high waterproof properties and effectively prevents liquid penetration. It recorded an excellent value of 9100mm in the water resistance test (the standard for general umbrella fabric is 300mm or more). It prevents stains on futons caused by bedwetting and night sweats, allowing you to use it with peace of mind every day.