Sealy 12" Medium Hybrid Bed in a Box Mattress, Twin

I was a little skeptical that a decent mattress could come folded up into a box, but I was wrong. The box arrived and I was still like NO WAY is this a thick mattress. We got it out of the box and when we started opening the plastic, it literally started hissing. Scared my baby a bit, but once the plastic was off, it bounced up to the advertised measurements. It is incredibly soft and sturdy. It feels just as nice, if not better, as my overly expensive mattress I have made by another manufacturer. It is so so soft. My boys instantly jumped on it and said it felt great. Luxury in a box. There were a few minor complaints and confusions I wanted to mention. The confusing part is one part of the instructions says to place it where you plan to use it before opening it up. The other part of the instructions says to keep it in a well ventilated area for 72hours. My son's room with his crib is intended room to use, but not where I want to ventilate something that calls for it. The mattress did have a chemical smell when first opened, but now 72 hours later we don't smell anything. It was not hard to move. I only got a twin XL. I think that if I had ordered a large size bed this might be problematic. Placing it where its intended, but also in a well ventilated area. My only complaint is with the shipper (not the product), they put this giant box barely up my driveway near a wall. It's heavy, even just for a Twin XL. It's not something you can just pick up and carry. I had to get my kids to help me get it to the actual house.