Double-layer Cat Window Hammock : Double level cat hammock offers your cat(s) comfort and fun .saves more room space than a single floor, and without taking up valuable floor space. Safe and Strong Suction Cups: 2 vacuum suction cups at top and 4 strong suction cups at bottom. , Industrial-strength suction cups hold up to 60 lbs, Super sucker provides safety for your lovely cats.LATEST DURABLE SCREW SUCTION CUPS: Screw suction cups can pat the air more cleanly and better adhere to the wall. Compared to the 25% fall off rate of the old regular suction cups, the improved suction cups has only about 5% fall off rate. Suction cups that can hold up to 60 LBS.20% MORE SPACE: Lengthening and widening design, your 15lbs and 29lbs cats can jump and play together without feeling crowded in cat window . Perfect for cats that like to bask in the warm sun or active cats that desire a high vantage point.MACHINE WASHABLE COVER: Cat window mat is breathable and durable, easy to clean, no chemical smell. Made of food grade mesh cloth, cat's body temperature won't overheat. With underneath its ultra-soft, machine-washable fleece cushion. Your cat will snore in her/his new bed.TIPS: The suction cup is made of high-quality PVC material. It is easy to become hard and fails to work properly when room temperature is too low in winter. As above suggested, putting into hot water for 2 mins will be helpful to regain the decent suction force.Type: B: fishbone patternFeature:Breathablecolor:Blue+blackMaterial:Cloth+PVCsize:51 x 31cmPackage Contents:1 x Cat Window PerchOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.