Memory Foam Support Pillow: The most important component of a memory foam pillow is the memory foam material, also known as polyurethane foam. The foam material is a high-elasticity, high-density material that adapts and supports the head and neck depending on the user's temperature and body shape. Memory foam technology, a viscoelastic substance that responds to body heat and conforms to the curves of the head and neck or other supporting areas, is used in memory foam support pillows. The pads adapt to the individual profile of the user to provide individualized support and comfort. People who suffer from pressure spots, muscle strain or misalignment of the spine may find relief from using memory foam support pillows, which are frequently used for neck, lumbar or back support.