Memory foam is a type of viscoelastic polyurethane foam that is designed to provide pressure relief and optimal spinal alignment while sleeping. It conforms to the shape of your body, distributing weight evenly across the surface area for maximum comfort and support. Memory foam also has excellent temperature sensitivity, meaning it will mold to your body heat and return to its original shape when you move out of bed. This unique characteristic makes memory foam an ideal material for use in mattresses, pillows, and other sleep products that aim to provide a comfortable night's rest.