I wear size. 40 and ordered the pants in L. Since it has a high cotton percentage is they shrunk in the wash, but this was probably taken into account when sizing charts because after washing it has better fitted. It was one of the first sports pants that I bought, so I kept it although I'm not so super happy with the interface. In step is much space could also attract man. ;-) I wear them to the gym and after training I have an all-out "diaper butt" in his pants, properly worn. Although there after washing again, but chic is now something else. The pants are comfortable, the fabric Allerding very thick, very warm for indoor.