This mattress topper helps promote a deep, relaxing sleep by providing luxurious support to every area of your body. The 'egg crate' foam surface is designed to enhance air circulation, even weight distribution, and total body support by gently cushioning every body contour. Luxurious heavy-grade traditional foam that will not "bottom out" under the body's high load areas such as shoulders, hips and heels. Featuring a built-in lumbar support to maintain the spine's natural curvature during sleep when sleeping on your back or side. Fits easily under your existing sheets. Deluxe dimplefoam mattress overlay designed to give you therapeutic, pressure free comfort and to diffuse pressure points and prevent pressure ulcers by evenly distributing the pressure. Re-distributes weight away from high load areas such as shoulders, buttocks, hips and heels.