ALL OF THE SILKS THAT WE USE IN THE ABOVE STYLES ARE PRE-STRESSED SO THAT RAIN OR EVEN BOILING WATER WILL NOT CAUSE WATER MARKS. THIS IS A HEAVY WINTER WEIGHT SILK AND HANGS WONDERFULLY. PRE-STRESSING RELAXES THE FABRIC LIKE A HEAVY COTTON DENIM THAT HAS BEEN WASHED A SEVERAL TIMES. PRE-STRESSING ALSO REMOVES ALL EXCESS DYES AND TAKES THE FABRIC DOWN TO A BASE STABLE COLOR. THIS MEANS THAT YOU CAN REMOVE OIL SPOTS WITH A STAIN STICK, RINSE THE AREA AND FEATHER OUT WITH A HAIR DRYER AND YOU WILL NOT HAVE A LIGHT MARK.