Simmons Beautyrest Pocket Coil Firm Mattress Pocketed Series Coil Technology – The high-quality coils are pocketed to prevent motion transfer, so when you wake up your partner doesn’t have to. High-Performance Coil System – Each coil is made of heavy-gauge metal to provide strong support and improve the lifetime of the mattress. Damask Fabric – The lush feeling of this fabric is both durable and silky and soft for a feeling of superior comfort. Stretch-Knit Fabric – Made to easily conform to the shape of your body while being resilient and luxurious. GelTouch™ Foam – Our memory foam is infused with gel technology to keep you at a comfortable sleeping temperature all through the night. Encased Edge Support System – Mattress space is maximized with a solid edge all the way around the edge of the mattress.