During my search for a new type of bed, I naturally went to Amazon.com. My needs for a bed were more extensive than most. After 2 failed back surgeries, I am left bedridden most of the time. So, I needed something comfortable, supportive, and firm, yet soft for my tender areas as well as being reasonably priced. I found Sven & Son. The ability to have the mobility of an adjustable bed frame is priceless! All of the features work exactly as advertised and this thing is built well. Really well. I did need more info about the types of mattresses, so I called the store directly. Jessica was happy to help me find the best bed for my conditions. The mattress she recommended, (the Wellsville) is perfect for me and my husband, who doesn't have back problems. It is hard to find a sole king mattress that we share to fit two different types of body demands. I was apprehensive about buying a mattress without trying it beforehand, but this worked out like a dream. The mattress is firm and supportive, yet not hard or stiff. I have had 9 different types of mattresses in the last 22 years of marriage and never found one, until now, that was so comfortable to my husband and me. Thank you Jessica, You knew exactly what I needed before I did!