Made of high quality polyester fiber, solid and durable, non-toxic and tasteless, simple to use and easy to clean. the silver coating on the polyester fabric, aging-resistant, and have a good effect on reflecting sunshine. water-proof and dust-proof. no cover on back and bottom, for electric wire and water pipe. if your washing machine is on the balcony, it is very suitable. the zipper design make it no need to take the cover off when the washing machine is working, easy and convenient.