This pillow can heat up in a microwave or be placed in the fridge to cool for use when you need to ease inflammation. A clay bead filling gives this pillow its unique properties and comfortable weight. The pillow also has a sewn in cream label. Made of polyester fiber, nylon, acrylic, cotton, and stone, it also measures 13"w x 1.5"d x 9.5" long. You can spot clean it with a damp cloth. The pillow also boasts a soft, removable, and machine washable cover.