... outer side) is Polyester, the back(bottom) side is cotton or viscose, and the back side is brushed, like Flannette, ia ... Specifications/Special FeaturesWarp: 50D/75D PolyesterWeft: 21S/32S/40S Cotton or Viscose or T/C YarnWidth: 59" , 63", 67", 71" Our current ... Standard 100 According the ISO, JIS, AATCC testing stardardUsing Cotton or Viscose Yarn as weft, then brushed get soft peach effect, inside ...