I bought my last pair of Merino Boxers over 4 years ago - 40 marathons/ultras ago. They are part of my ultra running kit. Anyway, these are not only a different colour to my previous pair but lighter and thinner...noticeably so.
At first I wasn't sure but having just done the Maverick Lakes without problems they obviously work. I should say I still use Squirrel Nut Butter!

I bought a pair of merino jocks a couple of years ago when they were promoting them prior to a marathon I did in Melbourne. Very happy to say they have been one of the best investments I’ve made given chafing issues I’ve had training. They’re as beneficial as the right running shoe and better than any other pair of undies I’ve tried, love ‘em, great stuff guys.

These underwear are simply amazing!!! Trust me, I have used them to walk, hike up and down multi thousand meter mountains in Canada, the Alps. For skiing downhill, for ski touring, going up and down mountains. Also used them under swimming trunks. Just dependable and reliable. Like a good friend that you hadn't seen, never any headache just there for you when you need it. Truly, thank you for making these. You have brought me great joy, happiness and fitness while wearing these and they are amazing. People size them right, buy them and get out there after it, love this life and you will love your Runderwear propelling you to new adventures.

I've been a Runderwear customer for over 7 years now and swear by their products. I don't leave the house, to go for a run without the Runderwear boxers.
I always have 3-4 pairs in rotation and a spare couple of boxers for races only. Once you go Runderwear, you never look back!

These boxers are perfect - I don't even notice them when running. On longer runs (1.5hrs+) they definitely cut down on the chafe that I've had when just wearing shorts with a built-in liner.
They don't dry super-quick, but they're good-enough.
So far they've survived being laundered on a 30 wash with no shrinkage or fading.