"I usually wear size 6.5~7, but after reading the review, I decide to order half size down (6 = 37), which is perfect. This sandal is really comfortable once you break it in. The first day I was wearing it, it hurts the inside arch of my feet, and causing a small blister on the spot. The next day I still decide to wear it with a band aid to cover the blister since it's really comfortable besides that. I skip the third day so that the blister can heal itself. And the fourth day, i can just wear it without the band aid, and it's absolutely comfortable at this point. I think because it's leather sole, you may want to wear a pair of socks for the first couple day. Once it sets into the shape of your feet, it will works like wonder. At first I was buying this as my road trip/camping sandal, but ends up wearing it almost everyday to work (well, at least before the winter comes). Highly Recommended!!"