Sturdy and Beautiful Cat-Face Shape Metal Frame: Easy to machine wash removable plush mattress. Saves valuable interior space. Durable Materials: The frame of the cat hammock is made of high-strength fiberglass rod with a load capacity of up to 17 kg. The durable steel cable prevents cats from chewing and provides higher load capacity, ensuring your cat can jump in and out safely. Easy to Set Up: This cat window bed requires no tools for installation. Can be placed on a smooth, airtight surface in minutes. The window cat hammock perch saves space and gives your cat a safe, comfortable, sunny seat. Best Gift for Cats: Cats love sunbathing and enjoying a view. This hammock maximizes limited space while giving your cat a cozy spot to enjoy the scenery outside. Note: Be sure to clean the windows and suction cups before placing. Suction cups will not adhere if water is present on the window. Please feel free to anytime if you have any questions.