This is the medium size version of PillowEase®, our most versatile option. This pillow is perfectly sized to use the way best suited for you. While the smaller size is better for smaller applications (think head, neck and travel), and the larger size for larger application (think larger areas of support), this pillow can be used for more targeted applications with more support and less bulk. The PillowEase® case is made with 100% cotton, 500 thread count Sateen. Our fill is made of upcycled post-consumer synthetic fill. The medium size is 20"x20". It comes with one white pillowcase.