The Wall Mounted Cat Window Perch, suction cup Cat hammock by TUCKER MURPHY PET is very well made and high quality materials. It’s easy to assemble, an Allen wrench is used to secure the screws. The pieces are easily identified too. You do have to really crank down on the Allen wrench to get the screws all the way in. The big suction cups just pop in holes and fasten down with screwing washers, very nice looking, no sharp edges to hurt your Kitty. The clear plastic bowl just sets in the wooden frame. It is not a huge plastic bowl, but my large Cat curls up in it just fine. It really sticks to the wi Dow very strongly, and the instructions suggest that you let it adhere for several hours before letting your Cat use it. It’s a sturdy, nice looking addition to my Cats play area