This is a 4 yard piece of synthetic fabric from the early 1970s that I had set aside for a maxi dress project that, excuse the pun, never materialized.  It is approximately 4 yards + a couple of inches x 45”.  I am calling this a light to medium weight crepe.  If you were standing in the sun you may be able to see the shape of legs but it would not require lining in my opinion.  The color is mint with cotton candy pink, with cinnamon rose, spring green, pale turquoise blue with all outlined in black. I am aware colors can vary depending on the monitor used so I have taken pictures indoors and out.  Fabric can be washed in a gentle cycle and dried using low heat.  This piece has never been washed or used in anyway and is in perfect condition.  Hard to find this hippy style fabric anymore.****The last photo shows the subtle difference between the front and back of the fabric.