I bought the orange Sling Go for my little Japanese Chin. She is 10 years old and has a spinal injury. She weighs about 10 lbs and likes to get out of the house but can only walk a few yards at a time. She loves being carried in the Sling Go and it makes it much easier for me. Her weight is distributed evenly over my back and shoulders which leaves my hands free to walk the other dog or pet her or talk on the phone.
It's good to have around if you have small dogs, you never know when one of them will need a little help due to injury or age.