I wear 8.5 regular in all my shoes. Except this one now. First I ordered Navy Fabric in 8.5 regular. Received a leather one - box said "fabric", but inside was the leather version. The toe box was very tight, it pushed toes together and also pressed hard onto the top of toes. But it felt like there was a lot of potential to the shoe, if properly sized.  Since I did not need leather, and also needed a shoe I can walk in for miles during travel, I re-ordered, in fabric, and 8.5 Wide. This fits A LOT better around the toes, and not too loose overall. Heel stays on when I walk. Very comfortable insole, and heel height, also, a pretty light shoe for packing.