Best quality pre washed cotton percale flat sheet this adrio cotton percale flat sheet features a lovely bourdon trim combining the softness of pre washed percale with a lightly crinkled lookfeaturespure pre washed cotton percale a strong and luxurious densely woven fabric 80 threadscm2 made up of very fine long staple combed cotton fibres the higher the thread count the higher the quality of the weave pre washing makes the fabric softerand gives the colours a super trendy faded loo