Memory foam toppers are made of high-quality viscoelastic memory foam and are meant to be placed on top of your current bed. This can give your bed the great features you find in full memory foam mattresses at a much lower price. You don't have to go through the trouble of tossing out your current bed either. A memory foam topper adjusts to your body's shape, reducing pressure points on your hips, back, and neck as it warms up. This means a more restful sleep, leaving you alert and refreshed the next day.