Sleep Innovations gel memory foam provides the ultimate in comfort, support and stays cool throughout the night * Exclusive 2-layer design features a 1-1/2-inch gel memory foam layer and a 1-1/2-inch Luratex Custom Wave foam layer * Superior comfort and pressure point relief compared to traditional memory foam; improves sleep by reducing tossing and turning caused by painful pressure points * 2-in-1 customizable topper designed with separate zippered compartments that allow you to easily arrange the layers for a customized sleep experience * After unpacking, allow up to 72 hours for topper to fully expand