What materials are used in the Birch Organic Pillow? August 12, 2020 18:29 The Organic Pillow is made with an organic cotton shell. It contains 70% natural latex and 30% organic wool clusters. Related articles I'm allergic to latex. Is that a problem? What Are The Dimensions Of Queen And King Organic Pillows? Can I wash my Plush Organic Mattress Topper? Can I return my Organic Pillow? How will the Birch Mattress feel? Soft or firm?