https://www.burton.co.uk/product/living-and-home-height-adjustable-comfortable-pillow-insert-without-pillowcase_p-0b21be65-c1d2-4cfc-847d-920e983b9c57£colour=White&size=One%20Size

A pillow insert combines softness and support to ensure a restful night of sleep. Crafted with a polyester fiber cover, it feels gentle on the skin and allows airflow to keep you cool and comfortable. Filled with squishy down-like micro polyester fiber for a pleasing plumpness. At 14 cm high, it suits side, back, and stomach sleepers alike. Finished with elegant geometric stitching and contrasting piping, it delivers both comfort and style, making it a practical yet refined addition to any bedroom. | Living and Home Height Adjustable Comfortable Pillow Insert without Pillowcase in White - Manufacturers part number: Living and Home_0000810320282