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We needed a replacement for our dog's travel food bag for long weekend trips. This is a great solution. It includes two bowls (water, food), food container with its own lid and flip-up crescent handle, and a carrying handle which holds the whole set together.
The food container is not built as rugged as the bowls (it might crack if dropped, fully laden, onto a sharp rock), but it's more than adequate for our purposes. The food container lid and flip up handle could be improved if it were of sturdier/thicker plastic and if the lid had ridges/texture on the outer rim for better grip - it's smooth and slick if your hands are wet, and I don't want to risk breaking the handle by using it to open the lid.
The black plastic carrying handle is reasonably sturdy, and it holds the bowls quite snugly - fine for us, maybe difficult to remove/attach for toddlers and great-grandparents. I would like to note that the bowls on ours are snug and would stay attached to the food unit even without the black carry handle.
The bowls are wide and not too deep. Our dog pushes the bowl around when he eats... but the bowl never tips over. The bowls are smooth plastic; I might put some rubber feet on them to keep them from sliding around during meal time.
Our dog is a large breed (50-60 lb). He gets one cup twice per day of Pro Plan Performance kibble. The Traveltainer holds 7.5 cups of kibble - maybe closer to 8 cups if you tamp it down. So for our dog, it holds enough for 3 1/2 days with a little to spare. Your mileage may vary, depending on kibble size and serving size. For extended trips, we bring additional kibble in a small dry bag.