These briefs are really very smart. the solid top edge with rubber portion nestles nicely on the skin, feels good and also adapts very well. So far I could find no cutting or the like. Nevertheless, it does not slip. All of the material is very soft and feels very good on the skin. The fit (here: Gr. 42) is as expected. The price I find a bit steep, but usually due to design, quality and brand name, and also justified. Washed allowed only up to 40 degrees. I've just given also in the dryer, there were no problems. Discolored they previously have not =)