You shouldn’t lose sleep over the cost of better sleep, which is why we developed our best-priced Series Mattress Collection. This exclusive line starts with our simplest Series 2 twin mattress, and continues with 4 more mattress levels that include additional support and comfort features – all at unbelievable, unbeatable values. They even come with warranties that last up to 20 years, and they're made right here, in the USA.You shouldn’t lose sleep over the cost of better sleep, which is why we developed our best-priced Series Mattress Collection.