Bests & Worsts Reviews from Amazon

I bought this padding and it will not fully expand. Half of it is expanded and flat like its supposed to be. The other half is as flat and wrinkly as it was after it came out of the box. It's been sitting on the floor of an unused room for about 3.5 days, and it appears that it is not going to expand. UPDATE: I submitted for an exchange. When I first bought it, I paid an extra $50 for one day shipping, in which I got one that isn't working right. Now they sent me a new one with 2 day shipping instead! Pretty crappy in my opinion.