We were originally going to order an Elite II with King Bed Configuration. A used 2015 Elite II with twin beds became available, so we decided to give twin bed configuration a try.
Our Ollie came with 5 1/2" Poly Foam AB Lifestyles mattresses ordered by the previous owner and installed by Oliver during Ollie construction. We ordered a set of 11" memory foam custom size mattresses (special order for the Elite II) from AB Lifestyles today, 29" X 74.5" X 11" with 15" radius cut one corner of each mattress. We both like memory foam mattresses, so we ordered new 11" memory foam mattresses today. It's easy to make up twin beds standing between them. We like the walkway between the beds, too. I'm 6' tall and 215 pounds, the twin is comfortable size for me. My Wife is 5'2" and 120 pounds, the twin is comfortable size for her, too. We're happy we bought the used Elite II twin bed configuration.