I am a true size 8 and these fit great. I have ordered an 8.5 as well and didn't notice much of a difference. I do have a fairly wide foot and these feel great. These are some of the most comfortable shoes I have ever owned, but the quality is AWFUL.

After just three months they have holes everywhere and I have glued the rubber front several times. I have had two pairs and this has happened on both. Really disappointing, because they feel great but I will not be purchasing more.