I bought this after looking through several other products listed on Amazon, as well as other products from pet stores. I was drawn to this bottle because it promised better capacity than others. It works, and it does indeed offer better capacity than most of the other pet water bottles out there. However I wasn't too impressed with the bottle. The bottle is 20oz, with a wide mouth, pull out water release, and a fold down bowl. It also has a carry strap attached to the bottle so that you can easily carry the bottle on walks. All these features sound promising on paper, but they don't all play out that way.
First, the major appeal here, the flip down bowl. When I first read the description I thought it meant a bowl that flips down on a sort of hinge, but that's not the case. The bowl is made of thick rubber which is attached directly to the bottle, and to flip it down for use you have to turn the rubber inside out. This works for now, but I fear the rubber at the base will ware out quickly from repeated flipping and will break.
Second, the carry straps, while the straps seem hardy enough for the job of carrying a 20oz bottle of water, their attachment to the bottle does not. One of the plastic attachments has already broken, after one use. This isn't a huge deal, since it can be fixed with super-glue, or the bottle can still be used without the straps, but it's still an annoying flaw.
The bottle does a decent job, which is why I rated it 3 stars, and it serves its function. I just think that it could have been made a bit hardier. But that being said, I haven't yet seen a 'great' portable water bottle for dogs. It's worth it's price considering that other brands sell for the same amount at pet stores and offer less water capacity or less portability. So until a better product crosses my path, this will have to do.