Cats who love to play will love this tunnel. It matches the cat's natural activity and is made from high quality suede so is comfortable for your cat to play in. When you are not playing, you can simply collapse it and not occupy space. A ball can be hung in the tunnel to increase the fun for the cat. Both tunnels can be bought together but are cheaper when bought in a set and joined together for increased fun. Small is 67x30cm, medium is 130x30cm, the set is both items together.