As other reviews have said...Sturdy and Easy to assemble! I bought one in brown for my 12lb kitty kat, he loves to scratch on it and jumps up to look out the window.  I've had mine for going on 2 years and it is holding up perfectly! I had to put dry food and treats on it to get him used to it at first, but now he knows just what to do!  I recenlty purchased 3 more, one more for mine to put in another room, and one for each of my two son's cats.  They all love it, and use it daily!  I am a little lady and I put all of them together myself in a flash.  You cannot beat this item for it's size and usefulness, durablility and ease to put up, and it looks nice with my decor. Only thing was they sent one in wrong color, no biggie.