Ortho™ Available in 4, 6, 8, and 10 thickness, the Ortho™ is ideal for you if you are over 60 or suffering from back issues which demand a harder back support. If you like a firmer mattresses, then the Ortho™ is the one for you. It's also an ideal gift for ageing parents as the feel of this variant is medium-firm.The high resilience foam top layer has been designed to provide firm orthopedic support especially to those suffering from lower back pain. This layer also lends the mattress some bounce and springiness. This mattress also comes with a soft, high quality cashmere fabric cover that has been specially treated with aloe vera gel to keep your skin hydrated and looking youthful. Our proprietary Flo Responsive™ foam forms the foundation of this mattress and ensures that no part of your body sinks into it more than it should.The mattress is reversible and can be used on either side. On a scale of 1 to 10, where one is soft as cotton and 10 is hard as concrete the top layer is 7/10 whereas the base layer is 8/10.