This bag is perfect for our 17 lb Jack Russell. We love our Sport Sack back pack too.
Good quality, comfortable to carry, multiple zippered entry/exit doors, It holds its shape well, not all floppy but still folds flat for storage. My dog weighs 20 lbs and she fits fine and she likes to sit in it with the top unzipped while I carry her around the house and do chores. This product worked well for me and my dog.
We like the bag. It has been useful. I would suggest that the pad lining be a little stiffer so it gives a more level base. Otherwise, it's a nice bag. I like the color of the bag as well, nice neutral colors.
We love our K9 sport backpack and carrier. Our dog really loves the carrier. We were worried if she would take well to it since she's never been crated. But after a little training, she jumps right in it, even when we dont command it.The only thing I would suggest for the carrier is that it has wheels. It would be extremely helpful while going through long TSA lines and large airports.