Viscoelastic foam is a type of material that combines the properties of both viscous and elastic substances. It is designed to deform under pressure and return to its original shape when the pressure is removed. This unique characteristic allows it to provide excellent support and comfort, making it popular in products like mattresses and cushions. The foam is sensitive to temperature, becoming softer when warm and firmer when cool. This adaptability helps it conform to the shape of the body, distributing weight evenly and reducing pressure points. As a result, viscoelastic foam is often used in medical applications, such as wheelchair cushions and hospital beds, to enhance comfort and prevent pressure sores.