[tmnvix]

The best warm underlayer garments I've ever owned have been merino Icebreaker brand. They can be worn multiple times without needing a wash. Synthetics stink really, really quickly.

I asked claude to remind me of what Sir Peter Blake had to say about merino underwear:

>> Sir Peter Blake wore Icebreaker merino prototypes during his record-breaking round-the-world yacht race. After returning from the Southern Ocean, he claimed the fabric was "superior in every way to anything I had ever worn before" and revealed he'd worn his Icebreaker for 43 days and 43 nights without changing. He also reportedly greeted Icebreaker's original merino farmer, Brian Brakenridge, as "the sheep farmer responsible for stopping my undies from smelling."