WOW what a relief !!! For over 25 years I have had rheumatoid arthritis and although ,with medication and expert advice from medical professionals, it has been kept under control but due to advancing age, getting out of bed each morning has become an unpleasant and painful experience , caused by my many aches and pains. After reading the many complementary reviews of your product, I decided, with some apprehension, to order a single gel memory foam mattress. It was delivered one day earlier than advised, a pleasant surprise. I left the mattress to expand for 12 hours before putting it on my bed. Getting into bed that first night was indeed, a felling of bliss and bolstered my hope of a really good nights sleep. I was not disappointed, I slept soundly and most importantly, I was almost completely free of aches and pains and stiffness in my knee joints, back and neck. I was able to enjoy the best day I had for years. Without hesitation I can recommend your memory foam mattresses to anyone wishing for a healthy, restful nights sleep. In fact I am wondering if it would be more advantageous to purchase another memory foam mattress to put on top of the one I have bought to double the thickness, in order to make my time in bed even more blissful. Thank you for manufacturing such a beneficial product.