The 11" Ananda mattress combines comfort and support with our pearl and gel infused reactive memory foam. Our reactive foam provides a natural bounce to the foam, providing you with additional push back support as it conforms to your sleeping position. The 11" Ananda is perfect for all sleeping types. If you are a side sleeper it provides enough give to make sure your shoulders and sink in but provide support for your hips. If you are a back sleeper you will appreciate the pushback feel as it fills in the lumbar of your back and provides support while you sleep or adjust on our whisper quite adjustable bed frame.