I purchased one pair to wick away sweat while running. I now have 6 pairs and they are my go to undies for exercise/running. Wedgies are not a problem either. They fit true to size (for me at least- 5'5" 130# and wear a medium)
"These are the only undies I want to wear. EVER."
I have three pairs of the siren hipkini and I am slowly planning to replace all my undies with these beauties. They travel like a dream, easy to wash in a sink and dry by morning if you're in a hot climate. I'd never go back to synthetics. You'd think wool underwear in the tropics would be a horrible idea but they are awesome, so thin and breathable. They perform just as well in cold weather too.I really can's say enough good things, I with they sold a 6 pack at a discount cause I would be all over that. Do yourself a favour and buy a pair or three.