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.