The seat is absolutely lovely. I bought it for my toddler to use as he keeps climbing sofa but my other two  age 4 and 7 using it instead. They all love to sit in or just play roll over game. It is from strong material and its easy to clean with a damp cloth. Even I tried it just to see why they like it. If you shake the beans in the right place the back support is very strong to keep me in place (small adult 5foot 2).
If we had the space I would buy another one. I cant find no fault with it.