Just got my Meermins in on the Olfe last. I wear 11.5 D US (e.g. on the AE 5 last) and ordered the 10.5. So I went down one full size from my US size. They fit a bit snug, but in a good way. The toe box is perfect for my foot. The sizing was on Jose's suggestion after sending him measurements of my foot, based on a pencil drawing.
This is the 12153-Y style in dark brown suede. The color is more accurate on their website.
Like most everyone else, I...