I put on the 47 and had ordered size 48, but in fact I received from 49, and this is probably my luck ... Because I had at the same time also ordered another pair of the same brand (model Intercept) at 48, but that prove to be too tight. For them, it's a bit Conversely, they may be a bit large, they do not quite shake the foot, plus the laces tend to slip. I used them today for release of about 13 km, with some paved areas and quite a path through the woods with a little earth and some stones, then the end of the course a long portion of Castine. These are not the slippers I hoped, (instead of boats), but I did not complain too much, they did the job, except in the downhill where the foot is not sufficiently well maintained and tends to slide forward. No problem sole side, the grip is good, but it was on the dry. We'll see in future releases, I'll try to improve the comfort and support. Finally side presentation and robustness, it is not at the Intercept, they are less versatile, well-typed hike. However, I do not regret my purchase, especially as the costs were fairly well placed.