Everyone was sick and tired of traditional spring-loaded mattresses (keep in mind, this is initially in the 60s, when those types of mattresses were far worse than they are today). Memory foam was marketing to reduce irritability in the morning, sleep better, endure less pain, and it was all true. Memory foam traditionally uses petroleum construction, though there are other types available. Memory foam doesn’t have cotton loaded around springs; they take a springless approach to your night’s sleep.\r