I wasn’t sure what to expect in receiving a “mattress in a box”, so was a  bit curious, with ordering this. I’ve included photos of various stages of the opening of the mattress for others wondering the same. It’s been two days that the mattress is out of the box and seems to have expanded nicely. Mattress seems comfortable although I have yet to sleep on it since it’s for my guest room. I lied in it while my granddaughter was bouncing around on it, and felt little movement. So far, so good!