Selling a set of two, as they are no longer needed due to a room rearrangement. Simply place them under your futon or mattress to absorb moisture and help prevent condensation and mold. 【Product Details】 Size: 110cm x 180cm (for semi-double beds) Quantity: 2 sheets Material: Surface/Back: 100% polyester, Filling: Silica gel Color: Gray 【Condition and Notes】 These have been used regularly, so there is a feeling of use. Also, please be aware of the following condition of the moisture sensors before purchasing: Sheet 1: The moisture sensor paper is torn. It is unknown if it is currently functioning. Sheet 2: The moisture sensor paper is missing. *The sensors are only a guide. The dehumidifying function can be used repeatedly by drying them in the sun regularly. 【Shipping】 Due to the thickness, they will be folded and compressed for shipping.