Elite down alternative pillows by Austin horn are filled by DuPont Sorona fiber mixed with pearl fiber. - Sorona is derived in part from annually renewable plant based ingredients (corn).- Pillow is comfortable and supportive to head and neck. It has 500 thread count, 100-percent sateen cotton fabric and has 1-inch gusset and matching color self welt.- Pillow is machine washable. Machine wash in cold water, gentle cycle use only. Do not mix colors. Use only non-chlorine bleach. Tumble dry-low temperature. Dimensions:Standard pillow : 21" x 28" with 26 oz.King Pillow : 21" x 38" with 35 oz.Euro Pillow : 28" x 28" with 35 oz.Additional Features includes:• regulates climate & has moisture absorption capability• excellent bounce back characteristics• static-free & good for relaxation• no chemical additives for its natural performance features• small carbon footprint in comparison to other polyester down alternative fiber.