Cradle your body and relieve painful pressure points to help increase blood flow while you sleep with this Slumber Solutions Highloft Supreme 4-inch memory foam mattress topper. This polyurethane topper features an egg crate texture that you can face up or down depending on your preference. 4-inch mattress topper 100-percent polyurethane memory foam 2-pound foam density Egg crate texture can be placed face up or face down Helps rejuvenate tired muscles Eases back pain Meets all flammability standards Twin is 37 inches wide x 72 inches long Twin XL is 38 inches wide x 79 inches long Full is 51 inches wide x 72 inches long Queen is 58 inches wide x 77 inches long King is 75 inches wide x 78 inches long California King is 70 inches wide x 80 inches long Memory Foam Tips: Remove from packaging within 72 hours of receipt to maximize memory foam expansion. This product arrives very tightly packed. Unwrap and allow 48 hours for this product to return to its original shape. Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours. Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product. Due to the nature of Memory Foam the firmness level of every item is unique. Please be advised that even similar products may produce different firmness results. Topper dimensions may be slightly smaller than your mattress dimensions. Size has been designed to allow you to easily secure your fitted sheet over your new memory foam topper. Please keep this in mind when you place the topper on your mattress. Once opened this item is not returnable. Click here to view mattress topper buying guide.