Customers find the pet carrier backpack to be of high quality, sturdy, and easy to use, with one customer noting it keeps hands free for bigger dogs. The comfort and size receive mixed feedback, with some finding it comfortable while others say it's uncomfortable, and while some say it fits well, others find it too small. The straps receive negative feedback, with customers saying the back straps are worthless. Customers appreciate the safety features, and one customer mentions the back strap provides support to offload the shoulders.