Cautions for use with waterproof sheets; When washing, please be sure to put it in a laundry net. It will tear the film if it gets tangled with other laundry. ■ Warning point when dehydrating: Dewatering uses centrifugal force of the washing machine to blow the water. Unlike cotton, the waterproof fabric does not allow water to pass through during dehydration, so water will be stored inside. That weight may grow with centrifugal force, and the worst washing machine may fall over. When dehydrating, please put the sheets in a net and set the time in a short period of time. If the machine vibrates a little, you can finish it, and re-insert the sheets and start again. Note: Please do not leave the place.