RELIEVE PAIN & PROTECT THE SPINE - 2-layer pressure-relieving bamboo charcoal memory foam conforms to your curves and distributes weight evenly to align the spine and alleviate pressure points. 2-LAYER DESIGN & OPTIONAL FIRMNESS - Featuring double-layer foam design, the top side of the mattress topper is firm, and the bottom side is extra-firm, giving you the "just right" firmness. REMOVE MOISTURE & ALLEVIATE FATIGUE - Fusion foam contains bamboo charcoal, copper, and green tea extract, which can remove moisture and absorb sweat, promote human blood circulation and metabolism, and alleviate fatigue.