Product Description Comfortable Cat Hammock - Enjoy 360 Sunbathing Upgraded Knob Suction Cup: Can support the weight of a 23 kg (50 lb) cat. It can ensure the cat's safety when jumping on it. Double-Sided Mat: The carpet is made of velvet and woven fabric. Please choose the right side for your cat according to the corresponding season. Durable Material: Compared with other ordinary cat window perches, PUEIKAI uses high-fiber glass tubes with stronger load-bearing capacity. Longer life. Easy to Install: The cat hammock can be installed on smooth, clean glass doors and windows in seconds. No tools required. Read more Advanced Materials and Components 1. High-Strength Fiberglass Rod - Compared with ordinary plastic water pipe, high-strength fiberglass rob has higher load-bearing capacity. 2. Double Sided Use Cushion - The cool surface is breathable and suitable for summer use. Plush surface keeps warm, suitable for winter use. 3. Powerful Button Suction Cup - The drop rate of other traditional pressure cupping is about 25%, and the suction of the button is only 5%. 4. Durable Steel Wire - Durable steel wire connecting wire can support 50lbs cats to play freely in the cat hammock. How To Use The Suction Cups Properly? 1.Clean the glass first, so as not to have any impurities or dust on the glass which will affect the suction of the suction cup; 2. As for the button suction cup, you need to put the suction cup firmly on the glass first, then tighten the button to release the air in the suction cup, so that the suction cup can play its best role; 3. For ordinary suction cups, stick it firmly on the glass and try to eliminate the air inside; 4. When used in cold weather, it is recommended to soak the suction cup in warm water before use, so that the suction power of the suction cup increases; 5. We recommend that you reinstall the hammock from time to time to prevent air fro