This is the one I have. You could put 10 Chi's in it, but my 4 love that they can lay down, stand up, move around without being crowded, etc. The Sherpa lining is very nice, and holds up to washing. It's the Snoozer as I mentioned.
"If you aren't part of the solution, you're part of the problem."
I love the Outward Hound products, they are not the most plush but are very affordable, easy to find used, light weight and easy to transport. The two I have clean up easily which is great for accidents. I have installed mine on my scooter (see profile pic) and they have stood up to the durability test for months now.