I bought two pairs before I went on a 26-day-long backpacking trip. They held up great the whole time. They're comfortable, durable, and, most importantly, they stay that way while you're exercising. They're also easy to clean and odor-resistant.

As far as I can tell, these are THE underwear for extended wear. I wouldn't wear anything else if I were going hiking, backpacking, or even traveling. They're a bit expensive but very much worth the price.