The metal portion with brackets and springs were difficult  to figure out from the diagram. The diagram could be much better and a link for a video would be great. Also the screws were not sectioned off in the plastic. All sizes were tossed in the same plastic section together. I had to separate them all and figure out where they went on my own.  Poor packaging o.n the screws. Not sturdy and back not high enough. The side pillows are as not fluffy enough. I am still trying to figure out where the straps attach.