We bought it for our puppy who is 3 months old now and it works great. No complaints really.
I had to go with the smaller one at first, but I am just about to order a bigger one as she is growing fast :)
Very nice holders. Not sure how long they will stand up to multiple dogs in the kennel. Only downside is the clamp that holds the bowl in place is not easy to manipulate. It is a struggle to get the bowls in/out of the clamp. I am impressed with the structure of the holder but the clamp needs some adjustment to make it easier to put in and take out bowl. It lifts by pressing the springed screw but the actual clamp needs to be re-engineered to have a higher back to enable a higher lift.