Fitted sheet densely woven fabric soft hygienic and comfortable 25 cm flap for mattresses up to 23 cm thickexcellent colourfastness after repeated washing at 60 quality value tried and tested in the laboratory 100 cottonfitted sheet densely woven fabric soft hygienic and comfortable 25 cm flap for mattresses up to 23 cm thickexcellent colourfastness after repeated washing at 60 quality value tried and tested in the laboratory 100 cotton the higher the thread count