Bests & Worsts Reviews from Amazon

Qualifier- For me, the purpose of buying this bag was strictly to transport my dog as carry-on in cabin on a plane. I have no intention to use this as a regular crate for daily or frequent use. The collapsible soft sides are perfect to squish to fit tight spaces that it was intended for. Nice bag, I bought the large one for my 15.8 lb dog. It has a soft fleecy fake sheepskin floor mounted on a 1/8" or 3/16" rigid board, so your pet has a solid floor. I have used it on three flights so far, seems to hold up well. Zipper fits tight, zips tight. Small flat pocket on the side for treats, poop bags and I fit in some flat folded paper towels in case there is a leak (from my dog). It fits well under any of the seats of a Boeing 737-400. The first two photos were taken on a brand new 737-800 on Southwest in a 3-aisle-3 configuration, I'm sitting in the window seat. My 10 year old daughter wanted to have our 15.8 lb long haired dachshund in front of her, but he started to fuss a bit mid flight, so I moved the bag under the seat in front of me which is a window seat. The middle seat has the most foot room with slightly more generous width between the bench seat support. The window seat has the least room due to the curvature of the fuselage eating back into the floor space. I also flew on an older Air Canada Airbus A319, (photo 3 and photo 7) and that time it was an aisle seat, also not a problem. I wear size 9 shoes, 145 lbs and 5'8" so not that big, your mileage, as they say, may vary, especially if you have a big guy sitting next to you. I believe the aisle seat also offers the best ventilation / air circulation. The foot traffic may keep you pet more entertained, at the very least. Photo 4 shows how the top zippers open and your pet can have a look around. If he's not too squirrelly it allows the head to look around and still keep most of the body in there. Photo 5 and 6 I took to show that carrying around a 22lb bag-of-dog (the bag itself weighs around 4.7 lbs) plus all your other stuff through long airports runs does get taxing quickly and I had some success mounting it on my rolley carry on.