10-in-1 Flip Pillow Cover, Green, This pillow cover provides a snug fit for the 10 in 1 flip pillow's (standard size) unique shape By BcTlyInc from USA" - Walmart.com
Amazon.com: Contour Flip Pillow - 10-in-1 Rest Positions Wedge Pillow for Gentle, Plush Elevation for Back, Knees, Legs or Stomach Support Comfort & Relief - Standard Size (20 inch Width - Pillow