The Beautyrest Elevator Mattress Pad features a highly-resilient orthopedic foam pad ranging from 1 inch at the feet to 5 inches at the head. The upper body elevation is said to help relieve congestion, acid reflux and snoring. Details Mattress Pad Made with Orthopedic foam 1.3 pounds density Foam is resistant to dust mites and is naturally antimicrobial Temperature sensitive foam adjusts to your body temperature so you stay warm Improves circulation while reducing pressure points that can disrupt your sleep Mattress topper eliminates motion transfer and uncomfortable pressure points Meets all flammability standards Twin 38 inches high x 74 wide x 2 inches deep Full 53 inches high x 74 inches deep x 2 inches deep Foam Tips: To maximize foam expansion; remove from packaging within 72 ours of receipt. This product arrives very tightly packed. Please unwrap and allow 48 hours for this product to return to its original shape. Being sealed in plastic packaging sometimes traps odors. A few hours of airing usually removes the odor. Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product. Topper dimensions may be slightly smaller than your mattress dimensions. Please keep this in mind when you place the topper on your mattress.