Thanks to Kathleen's review of thePETCO Blue and White Kitty Crinkle Tunnel, I found this wider, cushier, expandable kitty play tunnel. My cat Tiger played in it constantly when I first bought it (April 2010) and can still be found sleeping in the felt-lined interior at times. I have two tunnels and oneconnector teeso he also likes to play with the ties that connect each part. My cat Turvy is not as excited about it but his form of play seems to involve me chasing him. So now I chase him through the tunnel where, upon exit, he attacks the scratching post on the kitty condo and waits for me to come pet/scratch/snorgle him. Tiger doesn't play in it as much these days so I'm not sure if he tires of new toys easily or if the hotter weather has something to do with it since the tunnel is lined. All in all, I am really glad I made the purchase. So much so, in fact, I am contemplating getting another connector tee and one or two more tunnels.