Journey into the future of comfort with the Horizon Odyssey 800 Pocket Memory Mattress. Featuring next-generation graphite-infused memory foam, this hybrid mattress is ultra-breathable, cooling and fresh. Nestled underneath, 800 pocket springs support your body where you need it. It's all wrapped in a soft-touch knitted cover and reinforced around the edges to prevent roll-off. Experience this space-age mattress as soon as tomorrow with Free Next Day Delivery - and a 5 Year Guarantee, too!