So I'll update on longevity at a later date.but first impressions are great! Little thin, but I live in North Carolina, USA and it's hot here most of the year, so I don't think that'll be an issue for me, just something for others to consider. I am 5'11" and 210 pounds, so a little curvy, and I ordered an XL. They fit great. Loose and comfortable, and the pantlegs are totally long enough! I was worried about that. I have very VERY long legs (37'!) and these are perfect. If you're shorter, they mSee full review