Reply To: Mattress Options Eric Reply To: Mattress Options2016-12-21T20:30:50-04:00 Welcome to TeardropForum.com › Forums › Teardrop Builders’ Forum › Mattress Options › Reply To: Mattress Options December 21, 2016 at 8:30 pm #405 EricParticipant Acting on the suggestion of another forum member, I got two Thermorest Mondo King 3D mattresses. They are 4″ high and selfinflating. You can adjust firmness. I have very good experience with much thinner Thermorest. The downside: cost ($210 each).