The mattress took just about 3-4 hrs to be at its full potential! It’s was supper soft the mattress molds to you like a glove. My fiancé and I could barely wake up we were getting such good rest.

there is an obvious defect with this mattress, but Sam's will not pick-up or refund because I picked it up curbside. I have no way to return it without renting a truck. HORRIBLE - stay away (see pics)

It is very comfortable. Didn't have a smell as some other reviews mentioned. We left it to "rise" for 48 hours. First night on it, I slept all through the night, which I haven't done in years. It's not too soft or too firm.

I was hesitant initially about a the brand, once I got it home let it settle. WOW what a difference this bed helped my back so much ! Only down side it’s bigger than my box spring.

My daughter bought this mattress for a daybed. I slept on it all week for my visit. The mattress was so comfortable! I highly recommend this mattress.

Member's Mark 12" Firm Memory foam mattress is exactly what I've been searching for in a mattress. It's consistently firm across the entire mattress and does not sag in the middle.

This was our first purchase of a mattress in a box. Our guest slept on it for two nights and loved it. The cooling gel kept her cool throughout the night. This mattress works great on the Member’s Mark adjustable base.

Great quality but this is not a medium firm mattress. Cannot sit on the edge of the bed without sliding onto the floor. Change the name to very soft and I will give it a higher rating.

I bought this mattress but haven’t slept on it yet. It smells like glue or chemicals . I aired out the room , turned fan on, opened windows, put deodoranizer on plug and it still smells.

Medium was pretty firm - my husband loved it and HATED the Firm. The Firm was like laying on a plank of pine wood with a blanket over it. The Ultra Plush works well for me - soft enough to sleep, where the medium was a bit on the firm side for me.