When I received a mattress in a box I was initially worried. I wondered how can a mattress in a box provide me with comfort? I had always purchased the mattresses already flat and ready to sleep on. Once I wrangled the box inside and carefully opened it, expanding started immediately. It took it a little while to fully expand in some areas but I waited before trying it. When I was fully expanded me and my hubby flopped down and we were both pleasantly surprised but the comfort! It was a much needed upgrade from our old mattress. I love how it didn’t get dirty from transport. The box and wrapping provided me a nice clean germ free mattress delivered to my door.