I received this Serta Perfect Sleeper Nurture Night 13.5" Medium Mattress from TryIt in exchange for my review.  This is a deeper mattress, and it has a fairly thick pillow-ish quilted top on it that lends to its coziness.  It seems to be made well, sleeps well, and seems like it will be a good mattress. I do, however, wish it could be flipped but it cannot.