CAT WINDOW HAMMOCK: K&H EZ Mount Window Bed kitty sill hammock offers your cat comfort while sunbathing and viewing the outdoors CAT FRIENDLY: Cat bed has an open top for easy access and provides a safe and private cat space STRONG & STURDY: Industrial-strength EZ Mount suction cups hold up to 50 lbs. and installs in seconds on glass windows or doors; remember to clean your window and suction cups monthly to ensure a tight seal (see window cleaning image) MACHINE WASHABLE: Includes a washable K&H Amazin' Kitty Pad that acts like an insulator to hold your cat's body heat while trapping cat dander and dirt MEASURE: Be sure to measure your window to ensure the product will fit; solid glass pane must be at least 27" wide and 11" high