Our Small Double Puro Kids Deluxe Memory Foam Mattress features a deep 5cm layer of memory foam offering supreme comfort & support for your sleeping child. This sits upon a highly resilient & hypoallergenic foam & pocket sprung base. This 23cm deep mattress is then encased in an OutlastĀ® cover which is made using NASA fabric technology for temperature regulation all night long. The cover is zipped for easy removal & machine washing at 40 degrees. The deeper HD memory foam layer provides the ultimate in comfort & support for your growing child & works in harmony with their body to ensure that they are sleeping in the correct anatomical position. Pocket springs provide even further support as they respond to changes in your child's sleeping position. Both of these elements work perfectly together & reduce the need to toss & turn, creating a deeper & more restorative sleep for their active mind & body. The OutlastĀ® cover features advanced sleep technology fabric originally developed for NASA astronauts to control temperature fluctuations during space flight. This unique fabric will draw heat away when your child's body temperature rises, store it, & then release it when their body temperature begins to cool, keeping them not too hot, not too cold, but just right all night long. Manufactured in Yorkshire, Engl&.