Gel Memory Foam Mattress Topper, 2 Inches For Full-Size Beds. Memory foam mattress topper can adapt to different sleeping positions, conform to the curve of the spine, evenly disperse the body pressure, effectively help improve the quality of sleep. Mattress topper can provide a convenient and affordable solution to soften your sleeping surface. It can also help protect your existing mattress from wear and tear and extend its lifespan. The gel foam topper is infused with gel factor in memory foam and has holes for ventilation to promote air circulation and enhance refreshing comfort. Available in 2 inch and 3 inch profiles. If your mattress is in good condition and just want to add extra comfort, 2 inch thickness is more appropriate. If your mattress is particularly firm or worn, then the 3 inch thickness should provide the appropriate level of comfort. Mattress topper full measures 74 x 52.5 x 2 inch. Please note: Unpack the mattress topper in a well-ventilated area for 48-72 hours to allow the slight foam odor to dissipate and return to normal shape and size.