about this item 1. With high quality 3.5" diameter suction cup, sturdy PVC frame and thick steel wire, this window mounted hammock has load capacity higher up to 15 kg. 2. It can be installed on windows, tiled walls, smooth doors, etc., no punch or tools required. Clean the window and the suction cups before you install this cat perch, wait it dry then put them on the window. 3. Made of breathable oxford fabric and plastic, the temperature of the cat’s body will not overheat in the summer. In winter, you can add a mattress on this cat window bed and it will be the most comfortable. 4. Easy to clean. Just remove the cover, hand wash or machine wash. to transparent polypropylene suction cups deformed during transportation, or low temperature of cold winter. Soak the suction cups in warm water for 2 minutes and clean with a damp cloth before installation. Product Description To attach the cat seat to the window: 1. Soak the suction cups in warm water about 160 160 for 2 minutes. 2. Clean