This is a ONE YEAR mattress. My partner and I (130 and 170 lbs) slept in comfortable bliss for 11-12 months and now in the 15th month we are sleeping in separate hammock holes. There is a still-firm mountain between us which is all that remains of the support we once enjoyed. $750 is far too much money for something that wears out so fast. We've rotated it several times and I am about to flip it to the unpadded side because I am desperate. **Read reviews for people who have had the mattress for more than a year.** We were very happy for the first few months but it wears out just after the warranty does. Terrible investment.