After one experience of receiving a pair of mittens where one fitted tighter than the other I reordered 4 pairs to have more chance of getting the right pair, after a long testing one seemed quite fine. The seams on black one though are different to those on the chestnut ones, some were coming loose or were loose already; my previous pair from few months ago can be worn unfolded which may be useful, the newer ones are sewn folded. Also I noticed my hands, particularly fingers, were dyed black a little just from the trying the mittens on (my hands didn't sweat). Kept them anyway and gave them as a present hoping the dyeing will stop eventually and knowing that these are really warm and toasty - I put mine on freezing hands (from snow) and my hands felt warm in a few seconds. They don't get sweaty or too hot as synthetic or blend material gloves do.