Percale bolster case in an ultra soft smooth and silky fabric that keeps its shape beautifully and feels incredibly comfortable best qualitybest quality percale bolster casesa new high quality tightly woven percale fabric 80 threadscm the higher the thread count the higher the quality of the weave made up of very fine long combed cotton fibres best percale is very hard wearing and easy care easy care treatment for easy ironing washable at 60c