This was a true treat to myself. I usually wear a dutch shoe size 37 so ordered the medium. Should have gone with size s. But they are lovely. I wear them with very thin cotton socks, which makes them slightly more comfortable. However, if you have very sensitive/ticklish feet I don't think this is it for you. They are lightweight so also easy to pack to work or on a weekend break. I would have found them even more brilliant if they put a bit of the lavender buds in the top of the shoes via some kind of lining. Maybe a tip for improvement for the manufacturers. Plus a small fabric / carrier bag for storing them in whilst you are travelling.