Navy Striped Merona Flats

I LOVE these flats! I am reposhing these never worn flats because in my search to replace my original pair of these shoes, I had ordered a size too small. I am typically a 10W/10.5 flats so I then ordered the size 11 which fit my 10W/10.5 feet. And then I got pregnant and am now closer to 11 so I would need a 11.5 in these! They run about a half size small!