Only just started using it following a four element operation on my right foot yesterday. Easy to assemble. Quality appears good. Do follow the instructions, I am a 15st, 5ft 10 inch 60 year old male. Still learning how to use it it but getting along well. I also have a bad back and gammy left knee so I am using a stick in my right hand to help spread the weight and reduce the rolling action when I walk as that can cause discomfort. An upright posture seems to help. Compared with using crutches it is a no brainer. OK, so a bit more fiddly to put on mbut one can sit in it ( it helps to just loosen the straps when doing so. More comfortable and they only take a second to tighten) so you don't have to keep taking it on and off. stairs much easier than crutches. Go down backwards. Nothing is perfect but the freedom I have opposed to crutches is wonderful and the ability to get downstairs and wander out of my house into my fields with my dog with a cup of coffee will save my sanity ( as a normally active person) over the next 3 months that I was due to be on crutches.