We had two. They lasted 2 weeks before we had to throw them out - cos the cats pissed all pver them. So I would not recommend getting them if you have cats, as for some reason cats seems to liken the feel of them to cat litter and wee on them (well ours did anyway).
So for us they were a total waste of money. But they were quite comfy, iirc.
That reminded me of my cat. Did the same to my beanbag. It was a slow process so me and DH became used to the smell. DH's brother eventually came over one night, walked in the room and said "it reeks of cat's piss!". I lifted up the beanbag and it was sopping.
we have one it is great for jumping off the sofa onto it is possible to use it as a bed it is v comfy it is hard to get out of if you are 7 months pg [as i recall] it is covered in kiddy grime, so don't buy silver