Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fair dog backpack for regular walks but...

I would not use this pack for long backpacking trips. The pack does not use a y-yolk over the shoulders and does NOT place the bulk of the weight over the dogs shoulders. I do like the accessories (waterbowl, food bowl, thermal mat, and leash). However, I have to say I'm taking my Mountainsmith bag to a seamstress to convert the chest harness to a y-yolk and bring the bag more forward to put more weight over the front shoulders.Dog owners with dogs who have long backs or a breed who have a tendency to get hip dysplasia later in life should NOT consider this backpack.Mountainsmith should be ashamed for selling a product like this that increases the likelihood of causing lasting harm to dogs.