I was reluctant to buy this legless chair because of the price. I justified it by telling myself a legged office chair is at least two hundred clams, and my spine is priceless. I love this legless wonder! It is super comfortable. I do not feel the hard seat that others mention, but instead I feel great support. The other floor chairs for purchase do not seem stable enough for me even though I only weight 160 pounds. I wanted an upright back, not one that even slightly slouches backwards, meaning I would have to crane my neck forward to read. This chair is upright just the way I wanted! It works well even on my couch, which I appreciate when I want to sit up and use my laptop.There is nothing to put together, it simply folds open and is ready to go. It weighs approximately 8 or 9 pounds. I have used it on my couch, on the living room floor, on my bed to sit up and watch TV and not lean on/stress the headboard. I plan to use it on the ground in the springtime at the park. I will use it by my wooden goban when playing Go from the floor with my friends. If I'm playing checkers on the floor with my kids, I will turn to this chair. Many uses!The plastic uprights for the back support are solid and inflexible, which is good. There is no seat angle adjustment, which is fine by me as I can slouch into various positions as needed. The back does, however, pivot on the round areas pictured on the uprights; that is to say, although the back does not recline at all, it does pivot in the middle of the supports so that is one leans back or reaches up to stretch, there is some accommodation from the seat back. The seat pad is very contoured with a pocket for the bum bum and a lower front for the backs of my thighs. The web back (I got the wine colored one, which is beautiful) is supportive and has slight "give" for comfort but is not too "slingy" to allow excessive play on back support. The built-in handle is easy to use, generous to the hand, not sharp to grab and hold, and is smartly molded into the balance point for the chair to make carrying easy. When folded, the chair is self-supported in remaining upright so that it takes up less space.This chair may not be what someone would want for pure relaxation as it is upright positioning is not for pure relaxation. It's really for someone that wants to work, use a laptop, watch TV, add back support to a couch, sit upright in bed, sit upright to eat from the floor, to place on the fireplace to sit at family gatherings, to use at a bleacher or picnic, to sit on the tailgate of their pickup truck, to sit on the front of back porch stairs of their house, to garden for prolonged periods, etc. I really like it and will update this review if I run into problems. Thank you.