This is a great mattress, I only used it for 9 months, it's in perfect shape but I'm selling it because I moved to couples housing and there was a mattress in the apartment already. Here's the description on Amazon:

http://www.amazon.com/LUCID-Inch-Memory-Foam-Mattress/dp/B00474X5DO

10" thick with 2.5" memory foam comfort layer and 7.5" polyurethane foam base
Open cell technology allows air flow, keeping the mattress cool and comfortable
Soft, doughy consistency quickly conforms to weight and pressure