Silica Gel for Futon - Dehumidifying Sheet We do not use fabric softener. We do not absorb the smell of fabric softener. It is safe for those who do not want to stain their futon or room with fabric softener. Approximate size: 100 x 100 cm Using this type of dehumidifier from summer to winter can prevent mold on your futon. How about getting one before summer? I bought this for my own use, but I made a mistake with the size, so I am selling it. Please note that it has been opened. Silica gel can be regenerated by drying it in the sun. It can be used many times. We also have silica gel for gaps in furniture, so if you are interested, we can list it. Combining multiple items into one package will make it cheaper.