Great for winter. 170gms thick 100% Cotton Flannel Sheet Wrap yourself in it. Heavy and Thick and very soft these sheets are essential for all flannel sheets enthusiasts. 100% Cotton Fabric with a woven, 170 G flannel sheet sets are exceptionally soft and yet also has excellent durability. This flannel sheet set with the warmth of a winter and make you dazzle during the day in comfort with 1 bed you want to spend them. Flannels are lightly brushed for a soft, warm feel.