My absolute favorite underwear I've ever owned.  I picked up a similar pair at Costco a couple years ago (full synthetic) and found I preferred them in keeping me comfortable, especially in the heat.  I picked up my first pair of these last year and recently decided to get rid of all my old cotton underwear and replace them with the Mission Men's Boxer Briefs.  They are the perfect balance of support and freedom, ventilation and wicking.  I now own 12 pairs and would never go back to cotton underwear.  They're great for everyday and for working out.  No chaffing, no wetness that stays with you long after you finish your workout, and no odor retention.