This petticoat is made of 100% polyester. This is a very soft slip to get you started in square dancing or if you just like the luxurious feel of this soft fabric. Changing the adjustable slip length is made easy for you by simply pulling a thread and dropping the slip to the next length, one inch at a time. All tops are made of poly-cotton fabric and the waist stretches from 24"-52". The 3/4" all elastic waistband has a drawstring added to cinch up the waist for a better fit.