Lewis N Clark Cooling Gel Memory Foam Neck Pillow, Black Temperature- and pressure-sensitive memory foam molds to body contours Removable velour cover features breathable cotton inset over cooling layer Cooling gel prevents buildup of body heat. Microbubbles enhance circulation for a cooling, relaxing sensation. Ergonomic design provides optimal head and neck support. Hand washable. 11.5in x 11in x 4in, 17.5 ounces