When I adopted my puppy this was the brand that she was being fed at the shelter and was also recommended by the vet. I was provided with 2 2-lb. bags when I adopted her, she was 10 months old, and so I needed just enough to get her through to 12 months. She seemed to enjoy the food and, after some research, while it's not the best brand in terms of ingredients, it is better than the grocery store bargain brands, so I still feel like a decent dog owner. Basically, I think this size is good for transition into adult food or even other brands if you wanted to switch.