Bohemian yellow and gray pillow cover, for a 12 x 16 pillow insert. | eBay
Amazon.com: MoonRest 12x16 Inch Synthetic Down Alternative Lumbar Pillow Insert Form Stuffer for Sofa Shams, Decorative Throw Pillow, Cushion and Bed Pillow Stuffing - Hypoallergenic 12“X 16” : Home & Kitchen