You can replace the dirty one or buy foam or beans to fill this cover and get a comfortable bean bag. It is time to updates the old one! 【UNIVERSAL SIZE】 It fits 4FT foam bag which is around L47 x W47 x H25.6 inches. These sized bean bags are designed to support small rowdy toddlers up to large men and women, are great for sitting, napping, and lounging. 【COMFY & DURABLE】made by polyester sofa fabric with a durable woven backing. It is breathable, comfortable and hypoallergenic. Extra long zipper for easy removal. 【COLOR SELECTION】 The covers are available in a range of stylish beautiful colors. You will Love the color and matches room perfectly. 【MACHINE WASHABLE】 Our comfy covers are machine washable, easy to clean. Simply throw in the wash, wash at low temperatures.