We followed the instructions, aired it out. But this ain't 4 inches, 2.5 inches at best. We bought two so returning this is cumbersome, what a waste. We have another 4 inch memory foam from another brand, that is a true to size, not this one.

Well I thought this was going to give us the comfort but no. It was too soft and it felt like it kept moving in the bed. Just not comfortable, will be returning.

We have a split king adjustable bed and I HATE the crack in the middle. We bought this and it is so amazing. Only problem is it does slide on our mattress so I have to adjust and remake the bed every couple days. But it's worth it.

It didn’t smell the first couple nights we slept in it but the 3rd night it had an over powering smell of mildew. There was a yellow line down the mattress pad too. Was pretty comfortable but I can’t deal with mildew/mold.

It's nice when you first use it. After about a month. It started sinking in. The biggest issue I have and it's irritating is that it slides around and needs constant rearranging. I wouldn't buy it again

I agree with review that said way beyond soft. I began to wake with numbing throbbing pain in neck and shoulders and lower back. Very disappointed. I had hoped the positive reviews were going to work for me. Still searching for sleep.

this is terrible it is way softer than i expected and i ended turning more trying to accomodate myself to sleep. definetely contacting sams club to return it.

We got this to add comfort to my dad's very old mattress. It has given new life. We are sleeping on his bed as he is now in a hospital bed and it's like a brand new bed. I was hesitant to order but I'm glad I did.

I purchased this thinking it would be a quick fix… opened on Thursday.. On Saturday it still had 6 areas that has not expanded. I will return this item.

Measurements for the 1st item shipped are 56" x 76" called Sam's they shipped a 2nd topper - same Measurements!! per dealer it should be 60x80 five or take a 1/2 inch.