Strong Upgraded Knob Suction Cups : Includes 2 x strong knob suction cups and 2 x thickened push-type suction cups. Please tighten the screw caps before use, the air will be more cleanly squeezed out. With the upgraded screw suction cups of a lower fall-off rate, the cat hammock can better adhere to the window, safer and longlasting to use! Large Space & Easy Installation : Dimensions: 24 x 13 x 18.5 inch (length x width x height), there is enough space for cats to enjoy. It can be installed on any smooth surface within a few seconds, such as glass doors and windows, mirrors. No tools are required. (Warm Tips: Before installation, please make sure the surface of the windows and suction cups is clean and dry; in winter, please put the suction cup in warm water to soak it softly before use.) Durable & Sturdy Material : The frame is made of advanced high-fiber glass robs, and the load-bearing capacity can reach up to 50 pounds (23 kg). Steel wire rope can not only prevent being bitten by cats but also has a stronger bearing capacity, ensuring that your cat is safe to jump in and out of the cat hammock, rugged and durable, with longer service life. Unique Double-sided Usable Design : Velvet + woven cloth. Breathable woven fabric is suitable for summer use to help cats dissipate heat. Soft velvet is suitable for winter use and helps maintain body temperature. The mat of this material is more resistant to scratches. Installation and disassembly are very convenient. Recommend to clean the mat manually instead of the machine. 360Free of Dead Corner Sunbath : This cat window perch can save your room space, and allow your pet cats to bask the sunshine while enjoying the beautiful scenery outside the window.