Bumboo seats

These bumboo seats are really popular on the marketplace section of singapore motherhood website. I wonder why? Agnes bought one 1-2 years back and said that it is an excellent product for babies who cannot sit properly. Saw these at the mall, and thought I'd let Jo have a go in it. He looks like he likes sitting in it, but the problem is, I had to squash his butt & thighs in. I do not think he can sit in there for long, so there's 1 item struck off my `Should I get for Jo' list.