I recently purchased 3 packs of these boxers in size xl and  find the sizing inconsistent. The first boxer  felt quite good initially but after 2hrs it got quite uncomfortable in the groin. The second boxer  went a full 8hr day with out realizing it was there. Both boxers from the second pack were quite loose  and rode all the way up my leg. I am thinking seriously of giving away the third unopened  pack. It's  too costly to return from the Caribbean. I have  Adidas tech fit climalite shirts that were all perfect but they missed the ball with the boxers ( atleast for me).