The Memory Foam 6000 Mattress is made from unique upper layer of high density visco-elastic polymer gel. Originally designed for NASA missions, it is soft and pliable following the outline of your body perfectly. - 5cm Memory Foam - 16cm thickness in total - Medium Comfort - Orthopedic mattress - Quilited zip off cover - Easy Cleaning - Anti dustmite features - Made to British standards/regulations - Arrives vacuum packed and rolled for easy transport. Please allow 72 hours once opened for mattress to fully expand.