I have two toilets in my house and a few years ago I had one replaced with a taller elongated bowl that I've gotten very used to. So I got this to raise up my standard toilet to a respectable height for my age. It seems to be made of a very sturdy but not high end plastic. It will do.The instructions had me a bit baffled as to whether or not I needed to remove my current seat and cover. Apparently after reading and re-reading, they can stay on but I decided to remove them for visual and cleaning purposes, I don't need more hidden crevices to try and clean. And actually, this seat is easy to remove if you desire to do that when you clean your toilet. I got the 4" riser but now after removing my current seat and back, I think I could have gotten the 6" one for more height. Well, for now, this will do, nice to have the extra height, the toilet seat fits well, is comfortable and it makes standing easier.