I have several pair of these and they are literally the greatest underwear for men ever! However I ordered 2 pair of XL which is the same size I have all 10 or so pairs in, checked the label when they arrived to make sure they were XL. Put them in the wash and they are so small they won't go past my knees! Not sure what happened with these but I obviously cant return something with no tags that has been washed so Im out $40 for 2 pair of underwear. Other than that I cant say how incredible these fit and feel.