The MemoryPedic Visco 1000 Mattress with Cool-Flex has a unique upper layer of visco-elastic polymer gel that was originally designed for NASA missions. This amazing material provides excellent support for your back and spine, aids blood flow and allows you to find the perfect sleeping position to help to eliminate tossing and turning.This mattress not only offers high levels of support but quality features too. The fabric is sanitised and the dry-cleanable cover zips off so is ultra practical. The mattress is also hypoallergenic therefore ideal for anyone with allergies. These high quality features combined with the supportive memory foam make this mattress luxurious as well as comfortable.This mattress also has the Cool-Flex fabric knitted into the cover. Cool-Flex is ideal for when the heat goes up in the summer and you want to stay cool as excess heat and moisture vanishes. It is also very useful in the winter because the gaps between the surfaces turns into a layer of insulation to fight cold air.