I've been wearing vibrams for several years but usually I go in a retailer and purchase them but I couldn't find a retailer in Chicago so I ordered on line. I ordered 2 pair. 41 is always my size. I ordered 41 in both pair. This pair was too big and the other pair is too small. I'm returning the other pair but I'm stuck with these because I wore them. I thought at first it wasn't too bad but it's stretched in less than five wearings and now my toes don't touch the top AT ALL.  I love vibrams but I was totally beat ordering these.