Size: 19" x 12" x 4"/3" (Higher end - 4 inches, lower end - 3 inches). Created exclusively for Memory Foam Neck Pillows like Tempur-Pedic TEMPUR-Ergo Neck Pillow, Medium Profile. Perfect fit. Hidden zipper closure at the bottom is artistic, better fit, and prevents slipping out. Includes One Pillowcase Easy Care & Durable - Machine washed on a gentle cycle in cold water with silk-friendly detergent and air dry. Mulberry silk pillowcases are composed of protein fibers, and have very smooth surface.