Machine Washable CoverAccording to the nature of the cat's love, our cat hammock choose the material that is safe and non-toxic, resistant to scratch and bite, with fine elasticity. Support hand wash and machine wash. In winter, add a mattress on this cat perch bed, this window mounted cat bed will be the most comfortable. The Best Gift For Your CatCat Window Perch offers your cat a high position. Leisurely sleeping on it, enjoys sunshine, weather and view of nature, give your cat a safe and comfortable sunny hammock seat, what a good day! Perfect for cats that like to bask in the warm sun or active cats that desire a high vantage point. Hold up to 22lbs(10kg)Mounts to windows using 4 suction cups that can hold up to 22lbs. Before the first actual pet use, put some other heavy objects (about 2KG) for roughly an hour, which will help the sucker to release tension and improve/stabilize the suction strength. After that, your pet can enjoy the seat more safely. Important NotePlease make sure to clean the windows and suction cups before mounted.If the suction cup not work well, The simplest solution is put it into warm water (50-70) for 2-4 minutes.Dry with a little bit water then sticking to the window. Simple and very helpful to make the suction cups powerful.