1. Important: Check for WINDOW REQUIREMENT Please make sure the window you will apply to has a 0.5inch or deeper slot, a 6inch or shorter window sill and a 3inch or shorter gap between the edge of window sill and the surface of the wall under the window. Your window MUST meet all the requirements to use the perch 2. Supportive and Secure Design Featured soft bolsters on three sides, the plush bed provides gentle support to your cat's joints and muscles, providing a secure and enclosed sleeping space to curl up and nap in the utmost comfort. 3. Large Space Cat Lounge With bed size: 24.8'' x 15.4'', Our Comfy cat perch for window sill a generous lounge area for your cats to stretch, play, and enjoy the view. The perch can be moved from window to window by simply lifting it up. 4. Sturdy Build Material Effortlessly holds up to 40 lbs., our cat window perch is crafted from premium hardwood and high qulity fabric. Rest assured that your cat can ly perch by the window without any wobbling or tilting