I have had the dog wheelchair for about 2 months now. I wanted to wait until my dog had been using it for a while before I gave a review. I do agree with the other reviews when it comes to this product. The quality is poor for the price, the directions are awful, riddled with typos, as is the website, and I could find no video on their site or on line for their product on the best way to get my dog in and out of it. That being said, my dog loves it.Out of box it had issues, the directions are not clear and when I got it out, put together and my dog into it, she fell through it. Everything was tight, but I found that I needed a spacer for one of the screws that just was not long enough to hold the leg straps in place, once she was in it. Not a fun experience for me or her. I placed a call to customer service at 6pm Arizona time, they called me the next day and emailed. I will say their customer service was very, very good and helpful. They responded right away, via phone and email, even though I had solved the issue on my own. Excellent customer service.As for the product: I recommend flipping the harness part over so it is upside down from how it is described to be placed. I found having the clip on the harness with the red strap, going up and connecting over the shoulder, of my dog, far easier to get her in and out of the wheelchair. I have 55 lb dog, this was not easy for her to get use to, having her feet up and in the stirrups, had her going backwards, which was fixed by getting a pair of booties for the back feet and letting the back legs hang for a while until she is more comfortable. I have since put one of the back legs in the stirrup and she is fine with it. If your dog's back feet are not going to be in the stirrups and will drag on the ground, get a pair of booties to protect the feet.We did her first couple of outings in the backyard and within a week, she was off on her own, no parent required, even at the dog park. The booties will fall off, so always supervise your dog when she is in the wheelchair, so you can find the booties. She is not in it all the time, just when we are out and about, once in the am and once in the pm, not more then 60-90 minutes each time. We worked up to this time. Start slow, maybe 15 minutes each outing for a few days and so on, it is not comfortable and will take time for certain muscles to get use to being in the new position. She may need some treat encouragement the first few times too. Thankfully her front legs are strong and help her get around in the house, but this wheelchair has made going to the dog park with my other dogs fun for her again. Give your dog time, smaller dogs will take to it far easier then larger dogs because they have a lower sense of gravity. She has been knocked over twice, once when a dog ran into her and once by a dog that did not like the chair. Do not leave your dog unsupervised as she will need your help to get the chair back up, if she falls over in it. Always bring the spare parts and tools with you, as just the movement can loosen the screws, but other than that, it is light weight, fits in my trunk, even though it does not collapse, easy to clean and she has learned how to go potty without getting any on herself. She can actually trot quite well in it too. It has given her back her mobility and we are all very happy about that. I would definitely recommend it.**UPDATE** After three months, of twice daily use one of the hollow side rails, which bend very easily, broke...not fixable at all, so I took the other side rail, that had not broken, to Home Depot and told the very helpful person I needed to replace the part. I now have two solid side rails and larger parts that hold the straps in place for less than $20 and she is off again. I had to make the siderails myself, but well worth it to see her moving right along again.**UPDATE** 05/29/2014: After 9 months: both sides rails replaced, one tire replaced, the leg harness broke on one side so replaced with wiring through the nyropene, the connecting component for the wheel and the cart itself, finally fell apart and could not be fixed. Thanks HD for assisting with finding suitable replacement parts. If your dog is around the 60lb mark and will treat the cart gently, I would recommend the 40-60lb cart. My dog off roads every chance she gets so we had to go with a different cart manufacturer.