The quality of this trike %26 thickness of the seat is better than expected. However, I did not expect that I would have to put the whole thing together. There are so many parts, it's still sitting on my porch, waiting for me to put together. I got it for my 89 year old dad, but I'm disabled and can't sit long enough to assemble it. It's sad really, because it is too complicated to put together. I do recommend this trike, the color, quality, just make sure you have someone that understands how the chain, breaks, and other parts go together %26 work. It's beyond me. I guess I thought it would already be assembled.