My cat Jasper simply loves his new carrier. It's plenty roomy so he doesn't feel constrained and with the ample screen windows he can still see everything around him wherever we go. He loves the multiple openings at home as it turns the carrier into a fun cave/tunnel. And the soft mat that comes in the bottom serves as his new favorite sleeping spot. Jasper also loves this carrier because it's big enough that he can even bring along a toy or two to keep himself entertained on long car trips.
We haven't used the interior leash yet because it's not quite long enough to accommodate his constant movements within the confines of the carrier, but I imagine that for a dog, content to sit and look out the top window as depicted in the online picture it would work great.
All in all this carrier is well made, incredibly sturdy, and as promised unzips and folds up to almost nothing. Jasper likes it so much that we really don't take advantage of that feature as we leave it out all the time next to his cat tree.
The one thing I will point out as a slight disadvantage is that the dimensions of the carrier are too large to be allowed on an airplane and the firm frame is not malleable. I'm an excellent seamstress, and was able to modify the carrier slightly, by removing four inch sections of the frame inside the seems, then re-stitch it closed. It still looks exactly the same and holds its shape perfectly, thanks to the durable fabric, but now when we fly I can actually flatten the top four inches so that it slides easily under the seat and still leaves Jasper plenty of room to breathe and move around. So if you're looking for a carrier that can take your pet on a plane, unless you can successfully do what I did, you should probably keep looking. But as for every other use, this carrier surpasses the rest in every way.