Material: Breathable Woven Fabric + Plastic, cat's body temperature won't overheat because of this cat window hammock breathability. In winter, add a mattress on this cat perch bed, this window mounted cat bed will be the most comfortable. Measurement: 55*35cm; Stainless steel cord length: 75cm; Strong enough to hold your cat up to 17.5kg (Note: Because of low temperature, the suction cups maybe lose its power, you can soak the suction cups in lukewarm water a few minutes, and dry it. Please make sure there is no dirt or grease on the glass). Safety Mounted Cat Bed: Industrial strength suction cups hold up to an amazing 17.5kg. Your cat could jump in and jump out of this resting seat, which is another kind of exercise, keeping good healthy of your cat. Easy to Install: Install it to windows or sliding glass doors, please press 4 suction cups hardly on smooth and cleaned glass. You can put weight on the hammock to test it's tolerance before your kitty jump into seating perch. Easy to clean: Cover easily comes off and can easily be cleaned by HAND WASHING.