Bucky Eyelove Eye Pillow,Waves,One Size Cover: 67% Rayon from bamboo, 28% Cotton, 5% Spandex Liner: 100% Polyester Filling: 100% Flax Seed Enhances deep relaxation soothes eye strain, headaches, migraines, sinus pain, hot flashes, and insomnia. 100% light blocking. Store in freezer for cold therapy Product is 8" x 3" Removable Machine Washable Cover