love these! I took 2 pairs (no other underwear) with me on my 2 week trip to Thailand. They took up practically no room in my suitcase and worked great. I washed one when I showered and let it dry (maybe 20-30 mins?) while I wore the other pair then continued to trade off.
If your budget allows, I would recommend purchasing 3 pairs for a trip like that, in case something unexpected happens. Even now that I'm home, I use them for the gym and everyday life. Great for camping too!

Other comments say these are very high-waisted, I actually preferred these over the ExOfficio Women's Give-n-Go Sport Mesh Bikini Brief- now those are almost granny panties (excuse the verbiage).