Size 38.5 vs 39 Sidi shoes

[SadieKate]

I was told that the half sizes were for width. just spreading the gossip.

I've heard that also and we had lengthy discussions about it on some long lost thread. However, my personal experience and measurements of my own multiple pairs of Sidi Doms and Genius is that the 38.5 shoes are longer than the 38 shoes. Both use the same last, but the length of the upper is definitely longer on the 38.5.

You may just have to try them on.