The Jewel Firm Mattress is designed for an amazing night's sleep. It's comfortable, supportive, breathable, and has advanced features to help you rest well. When you lie down, the Gel Quilt Foam gently molds to your body, easing pressure points. This layer is soft to improve blood flow and reduce movement during sleep. The High-Density Firm Foam provides increased support and stability for optimal comfort and alignment. The Jewel Mattress also has Serene® Memory Foam, which stays comfortable all night because it is not temperature sensitive. The memory foam has gel to keep you cool and increase durability. The mattress has a 5-zone pocketed coil system, giving the right support and pressure relief for your body. This promotes healthy spinal alignment and minimizes motion for undisturbed sleep. Side sleepers will like the cushioning on shoulders and hips, while back sleepers will appreciate the support for the spine. The coil unit is foam-encased for edge-to-edge sleeping and adds support and durability. The Jewel Mattress works well with adjustable bases. As you sleep, you will feel comfort from each layer working together. The breathable cover with Phase Change technology keeps you cool and prevents overheating. You'll wake up feeling refreshed with less pain.