Memory cervical pillows provide therapeutic neck support by conforming to and properly aligning your head and neck with your spine. Our pillows are made from premium heat sensitive viscoelastic memory foam and are ergonomically designed for optimum support of the natural curve of the spine. This 4 lb. density pillow features three variable density foam inserts which allow the pillow firmness to be customized to meet an individual's preference. Comes with a removable, washable zippered ecru terry cloth cover and two year limited warranty.