Thank you all, again!
Angie, two of those Comrags items are all natural fabrics -- the skirt is linen/ cotton (a lovely blend) and the blue and white batik dress is cotton.
The other items I've had from this company have included a poly or nylon or viscose component.
What I like about the company is that they really think hard about what will work best for that item, or what the fabric's properties are before they design -- and there have been times when, if they couldn't find a suitable fabric for one of their "basics" (they make a series of essentials -- a jewel neck black dress, a skirt, a shell, and a cardi) they just stopped making them for a while!