Dog Wheelchair,Dog Wheelchair for Back Legs,Lightweight and adjustableDogs,Pet/Doggie Wheelchairs with Disabled Hind Legs Walking,Light Weight Size: S-Medium

When it came it didn't have any instructions on how to put it together.

The media could not be loaded.  No instructions to assemble, but can be figured out. Once assembled, the wheel walker works pretty well. I have to be careful letting my dog off leash. I also like the pads that wraps around and shield the body from the straps.

Quick summary: 3 stars because the price is excellent, and the "bones" of the chair are very good. The reasons I did not give it 5 stars are listed below. Also below is my solution for making the chair work for my dog.There are no instructions included in the packaging, so you have to go to the product page and watch the instructional video in order to put it together. There are 2 issues here. #1, the wheels were not attached and there is nothing in the video about how to attach them. Luckily I have put lots of things together before, so I figured it out. #2, there is no parts list or explanation of what the parts are being used in the video, so you have to keep pressing pause, rewind, etc. Then unlock your phone if you stopped watching too long while trying to figure out what part they're referring to. That said, it is really easy to put together once you figure all of that out.The sizing is definitely off. I ordered a Small because my dog (a Cavalier King Charles Spaniel) is a little above the length/height cutoff for XSmall. The harness is way too big for her, even on the smallest setting. The fabric piece for the back legs is of nice quality. Unfortunately, the design was not thought out all that well. It would be fine for your dog if he/she wears a diaper, but the way this piece fits on their back legs, if they pee it is going to be an absolute disaster. It will get all over the fabric and all over your dog. The chair itself is nice. The wheels themselves could be better, but the "bones" of the chair is a great design. Every section is completely adjustable for height, width, and length. It is very light weight yet strong enough to do its job. So here's what I did to make this chair work.I used the fabric rear leg support as a harness with my dog's 2 front legs in the holes. It fits her front end way better than the harness did and is more comfortable for her. I attach it to the front of the wheelchair with small carabiners for quick setup. There is a fabric/velcro sling that is supposed to go under the dog's belly, and I used that as the support for her back legs. The harness I will probably donate to a disabled dog rescue because I can't use it at all. The way I have it set up, it works really well for my dog. She can and does use her back legs, but she is 17 with arthritis and beginning to show some neurological issues in her back legs - so this is really helping her to get around and also keeps her legs from going out from under her while eating, going potty, etc.If you have a bigger budget, you may be happier with a different wheelchair, but all in all I am happy with the purchase and it is definitely helping my dog - which is the most important thing.