TLDR: Rollator is sturdy and extremely helpful, but not high enough for taller people or wide enough seat for 350lb person. Details: Received burgundy rollator and put together without any real problems, although not as simple as other reviews indicated or as suggested by the instructions. First of all, none of the parts were labeled, even though the instructions clearly stated that they were. It was all well-packed in the box, each piece wrapped in plastic and bubble wrap, so everything was in excellent condition. It was a bit of a mess, though, to dig out all those pieces to find the instructions at the bottom of the box. Then trying to sort the pieces with no labels added another challenge. It didn't take a lot to figure it out, and with some attention to detail, I was able to determine right from left wheels. The pictures in the instruction manual weren't all that helpful, but again, taking my time to really think through the steps and details made it so that I was able to put everything together on the first try. It took longer than I expected (almost an hour, but I was being very thorough and cautious, wanting this to be as safe as possible, and I was also watching TV while doing so). I have plenty of experience in putting together modular furniture and now mobility equipment, too, so it was probably easier for me than for a novice. Once I got this put together, I tested everything quite thoroughly. This walker is for my own personal use as I recover from a torn quadriceps injury. Tired of using crutches, and winter weather is not good for cane, so decided to try out this walker and get myself moving more. I initially installed the handles at the highest position, expecting that to be a starting point and adjust once I got it all together. When I finally tested it, the handles are at the perfect height for me, based on instructions provided by my physical therapist. I am 5'7" and handles at highest point are perfect, so I would say that anyone significantly taller than that is going to be stooping to use this walker. I also noted that I am able to use the seat, but it is a tight fit to squeeze my hips through the handles. I am less than the 350 lb. maximum weight, but as a plus-size female, I do have wider hips (typical hourglass shape), so it is worth noting that anyone with wide hips/derriere may find the seat difficult if not impossible to use. On the flip side, if the walker were any wider, I would struggle to get it through the doorways in my house (older house not designed with wheelchair accessibility in mind). At this size, it fits through every doorway but not a lot of clearance, so some of the tighter corners in my house do require me to lift and slide the rear wheels to get the walker properly aligned to get through the door. Once I had everything together and made sure that all the parts were correctly aligned, including screws properly recessed into grooves, etc., I am comfortable that this is a well-built, sturdy walker. The brakes work well, stopping the wheels instantly when using the quick grip, and holding well when the brakes are locked. In fact, my cat immediately decided this walker was her new toy, and when she runs and jumps on the seat, it didn't wobble even a little bit, as long as the brakes are locked. When I forgot to lock them, the walker slid across the floor and freaked her out a bit, but not enough to stop doing it. LOL! So far I have only used the walker in my house as I am still getting used to it. From what I have seen, though, it moves smoothly and turns easily. Again, tight corners sometimes require me to lift and adjust the rear wheels, but that is fairly rare and only because of the older design of my house with narrow hallway. I do wish the wheels were a little more "all-terrain", as these are so smooth that I suspect they won't do well "off-roading." I don't do a lot of walking off paved surfaces, but there will be times that I need to walk through yards or parks and would like the wheels to be a little more "meaty" for those situations. In particular since those are the situations that I am most likely to need the walker as I continue to heal from this injury, but even with the smooth, narrow wheels, I am certain to be able to get around better than I have been on the crutches. One last note: the rollator came with several safety precautions, which are fairly obvious to me, but not necessarily to everyone. The biggest caution is using this walker as a makeshift wheelchair. It is NOT intended to be used as such and could be quite dangerous. When I was shopping for this, I noticed several reviewers comment about how well this works for them to move about while seated and/or for family members to move them while seated. If you need that kind of assistance, PLEASE get a wheelchair! The rollator seat is intended to offer a break when you need to sit for a moment and should NEVER be used to transport a person, whether pushing them on the walker or with them using their own feet to move it about. If a person (or cat, LOL!) is on that seat, the brakes absolutely NEED to be in locked position. The brakes should not be released until the person is standing free and clear from the seat and ready to start walking. Best practices would actually dictate that the brakes should be locked at all times unless the walker is being actively used as a walker. And as soon as you stop, lock those brakes again. If you get in the habit of using the brakes every time right from the beginning, then you won't be at as much risk of forgetting to use the brakes when sitting down and possibly causing injury to yourself or someone else. It is also wise to test the brakes regularly to make sure they are working correctly. This brings me to another complaint about the instruction manual. It advises testing the brakes and adjusting them if they are not working correctly, but nowhere does it give any instruction on how to adjust them. I'll figure it out when the time comes, but it really should be included in that instruction manual. Last complaint: the instruction manual gave no mention whatsoever to the strap that is dangling from the cross bar at the bottom of the walker. My husband and I both played with it for a while, trying to figure out it's purpose until I finally realized that when I pull up on that strap, the walker folds (quite easily, really). I assume that is the purpose of the strap, and if not, well, it works well for that purpose anyway. Again, the instruction manual doesn't mention the strap at any point, and it also doesn't give any instructions for folding/unfolding the walker when transporting. By trial and error, I discovered that pulling up on that dangling strap will fold the walker. When unfolding, please make sure to lock the "hinges" into place so that the walker won't accidentally collapse during use. I don't see any easy way to do that other than to bend over and push them down manually or use a foot, if you are coordinated and limber enough to do so. Both of those motions might be difficult for the average person who needs to use this walker, but then again, if they aren't able to do that, they probably are also depending on someone else to fold/unfold and load the walker in vehicle for them. Overall, I am so grateful to have this walker, and I think it will speed up my healing process as I am finally walking with a more normal gait and not relying on the crutches as much. I think it is a well-built, sturdy walker that will last many years (and hopefully it will be MANY years before I need to use it again). Just be aware that if you a large (very tall and/or wide) person, this walker may not be right for you. And hopefully the manufacturer will update their instruction manual to address some of the points mentioned here.