Serta Rest - Queen - 3 Inch Gel Memory Foam Mattress Topper - 60" x 80" x 3" Serta Rest - Queen - 3 Inch Gel Memory Foam Mattress Topper - 60" x 80" x 3". Conforms to your body's contours and alleviates pressure points. Provides balanced support and less disturbance from your sleep partner's movements Revolutionary advance in sleep technology that helps you sleep deeper and wake up feeling refreshed ! Premium memory foam swirled with gel for the perfect balance of comfort, support and the optimal sleep temperature.