Very airy and light cotton. The only problem for me is that the neck is a bit large (it's a Small already), so I will have to fix that, but it's a great sundress and I love the texture, feel and the lovely blues.
These ceramic knobs are "Blue Sunshine," as they are titled. Beautifully made on every level. I haven't installed them as yet, but they are obviously sturdy as well. A wonderful purchase!