For color choices, see Alternate Images Four solid wood posts are securely fastened to our wide wobble-free 24x24 base. For a design that will hold up to the largest and most active cat you know. Plus, you can now give your cat a great choice of scratching surfaces with four poles to customize to your cat's needs. With its large 24 x 15 shelf and sleep-tray 20x20x3 this is a purr-fect choice for the multiple cat household. Perfect for watching nature from their favorite window! This Cat Tree Features:   Large Top Tray 20x20x3 Large Middle Shelf 24x15 Perfect Window Height 30 Tall and Room for 3 Wide Wobble Free Base 24x24 4 Carpet Poles to Scratch Optional Sisal for 2 or all 4 Poles Plush Carpeting Easy Assembly Required Over 10 Different Colors to Choose From Shown with 2 Optional Sisal Legs To speed up the process of building your order, please select a first and second choice for carpet colors. Remember, the shades of carpet may vary from what is shown here for a variety of reasons. We will do our best to match the carpet you get with the colors you choose.If you have no 2nd choice , please choose the same color for both 1st and 2nd choice! Read less