We invented a unique pillow-in-pillow design that's built to satisfy all sleepers. We slept on over 60 different kinds of pillows from around the world to find the best fill types. Our pillow's buoyant core and plush, resilient, outer layer join forces to support all sleeping positions. Filled with nearly a billion microfibers, the pillow is adaptive and will respond to your movements throughout the night. Complete with a breathable cotton cover, the pillow is easily machine washable and dryable.