SnuggleFoam Pillows are an excellent choice to help alleviate tension headaches, neck muscle and joint sprains, and strains, ligament sprains, and arthritis discomforts. They consist of 100% viscoelastic premium memory foam, and respond to body heat which conforms to the unique shape of the user's body, creating a custom fit pillow for every use. The SnuggleFoam Pillow includes a removable soft, plush polyester/cotton blend pillowcase, which is machine washable. Pillows can be wiped off with a damp cloth, and air dried.