You have to watch a little that you can not beat them, otherwise with an unfavorable positioning of the thumb pain there. And I have very small hands (between S and M) for a man and so would cut bone on bone. The external weights could be a good deal bigger. For fairly large hands also not recommended in the 2 kg variant, you could get problems getting his hand still between the outer weights. For me it fits perfectly.
Therefore, the 4 star, the a deduction for any future bruised thumb)
