ELVIROS NECK SUPPORT PILLOW FEATURES A WASHABLE AND BREATHABLE PILLOWCASE MADE OF POLYESTER AND 3D MESH FIBER. THE COVER OFFERS 3X MORE BREATHABILITY THAN OTHER CONTOUR PILLOWS, ENSURING A COOL AND DRY SLEEP EXPERIENCE. MACHINE-WASHABLE FOR CONVENIENT CLEANING AND MAINTAINING HYGIENE. ZIPPER CLOSURE FOR EASY DISASSEMBLY. INCLUDES DOUBLE PILLOWCASES (STRETCHY POLYESTER LINER) TO HELP PROTECT THE NECK PILLOW.