Have always worn the type of underwear what could be found at Target, Costco, etc. These a a nice upgrade. Extremely comfortable, seem to be fairly breathable and durable. Wore these on a 16 hr flight from San Francisco to Dubai and they performed very well for a long day of sitting/sleeping. Only complaint is that they run small. The first batch I bought was in a medium (wear a size 31-32 pant) and they fit, but tight, like a compression short.. even still fairly comfortable. But bought another 3 in size large and find them more relaxed and comfortable, and not at all loose. Only other comment is that I would have liked to see the fabric composition in the description to really know what I was getting before buying. Overall very good, will probably buy more in a large.