it was made popular while in the customer market as topper pads, although NASA developed polyurethane foam in the 1970's. Afterwards within the 1990is, the polyurethane foam mattress was established. From then till today, it's filled an extremely prominent space in the mattress industry. Sleeping on the polyurethane foam mattress is considered great for people with back problems, arthritis, mutual and bone problems. Memory foam beds can be purchased in quite a few sizes including solitary, double, queen, king, Colorado queen, California king and super king sizes. Some dual polyurethane foam mattresses have both a softer and part that is harder and the requirements of partners to meet. Primarily, the occurrence of a foam bed is all about five inches. www.mattress-inquirer.com/spa-sensations-memory-foam-mattress-reviews/ Choosing the proper type of memory foam mattress is just a crucial decision. When purchasing one, these following ideas may actually prove useful to you. There are particular factors that must be considered while purchasing a memory foam mattress, so you get a suitable mattress of your choice.