The McKesson mattress topper overlay pad is used to increase the comfort of those in bed for prolonged periods of time or for after surgery. The foam topper evenly distributes body weight to help them avoid pressure ulcers and tissue breakdown which can occur when skin presses against a firm surface such as a mattress. Even weight distribution helps reduce pressure on areas of the body such as heels, ankles, tailbone, and hips. The blue convoluted foam, similar in design to an egg crate, promotes air circulation for enhanced comfort.