I felt compelled to write this review, because of the positivity I experienced with this item. I took a chance to purchase this item for the twin bed I have in my second apartment. Though the mattress is new, I still was not comfortable. When this item arrived it was all rolled up as expected, and I was afraid of the scent, since some of the reviews suggested an odor associated with this topper. So I waited to open it , in another room, just in case. There was no smell, it is 4 inches thick as promised, I placed it on my mattress and put on the bed linens. I was afraid to lay down, since I was already at the point of no return, I was committed to this item. That night, I went to bed, and had the best surprise ever !! It was comfortable, like sleeping on a cloud. Though it was soft, it had the firmness I needed for sleep. I am most satisfied.