Description: HIGH QUALITY NATURAL MATERIAL: Made of sturdy and solid steel rings with durable soft flannel, can provide cats with long term sleeping . STABLE MOUNT: Steady mounting, The general specification is easy to install and can be placed on the top of the sisal column with a cat litter, screw holes require 8mm or 10mn screws to install into the column holes, (the product does not provide screws) . EASY TO USE: Easy to use, provide a steady, reliable and comfortable place for your dear cat . GOOD LOADE BEARIN: durable and solid, pressure resistant, scratch resistant, suitable for cats of all sizes, and can withstand multiple cats jumping and playing at the same time . SPACE SAVEp: Let your lovely cat comfortably bask the sun, simultaneously enjoy the scenery outside the window, and won't take much space at home . Specification: Material: Steel ,Flannel Color: Gray Style A: diameter of 30 cm within 11 Lbs Style B: diameter of 35 cm with 20 Lbs Package Includes: 1 Piece Cat Bed Note: Colors might be different due to different monitor display. Please allow slightly difference in size due to manual measurement.