twin) Upgrade 2 In 1 Dual Layer Design Elemuse full xl mattress topper features a bottom layer of 2 inch cooling gel infused memory foam pad and an extra layer of 1 inch squishy quilted Down Alternative Pillowtop Mattress Pad filled with ultra-soft down alternative fiber. The plush soft mattress pad adds an extra layer of comfort, making you feel like sleeping in the cloud. Comfort combined with gentle, pressure-relieving support. Refresh your old mattress. Relieve Pain & Contouring Support Elemuse cooling gel swirl memory foam mattress topper easily conforms to the curve and shape of your body, distributes weight evenly, reduces body pressure, and effectively improves sleep quality. The slow rebound function of the memory foam helps relieve pain and maintain the spine in natural alignment.