I'm not sure but I ordered it yesterday and will go pick it up later today. I'm hoping to put it around my Christmas tree. Amazon has one coming up on lightning deals at 1 central time. Amazon's is 18 square ft but has extensions you can purchase. BRU'S is 18.8 sq ft.
lulu21 we got a ton of use out of ours from 7-11ish months. I had it set up in the kitchen so I could cook and DS happily played with the pile of toys in there. He got annoyed with it once he was walking. But it was very helpful for the "crawler to walker" transition period.
I need it for the 'momma needs to pee' or 'momma needs to make lunch' breaks. He's pulling up and crawling everywhere, so it's hard to put him in a containment device because he flips his shit.