These have been my go to underwear this summer for mountain biking, hiking and comfort. The leg holes are snug enough to not ride up without being restrictive.
I originally bought these hoping to wear them to the gym however I didn't put two and two together about how see through merino is. Despite that, I absolutely love them for lounging in my apartment on summer days.
I like the thinner waist band, compared to previous years, because it doesn't put so much pressure on the abdomen. They stay in place just fine. I wear them for snowboarding but also for other activities. I sized up from xs to s and these fit comfortably. I like the longer cut because they add some lift instead of cutting across the bum.
Nice fit, warm.