Walked my first 18 yesterday in my new black TL-01 shoes. I have a narrower foot and this is the True shoe for those like me. Incredible traction and stability. Narrow through the heel and mid-foot, wider in the forefoot. My feet never got tired, and I never had to think about how they felt. Fit is true. Let’s say this. I usually wear 12 in a Nike running shoe (Nike sizing is all over the map), and the 11.5 in the TL-01 is perfect.