>>647035>BambooIs straight up customer disinformation. Bamboo fibers have a length of no more than 3mm, far too short for a yarn. When manufacturers say bamboo, they really mean viscose/rayon, which can be made from pretty much any tree or plant. Sometimes it's also lyocell/tencel, which is a similar thing (supposedly better, mostly just more robust). Don't know about the specifics, but cellulose fabrics are pretty much all problematic when wet.
>>647307Hemp is really just a better version of cotton, also a cellulose fibre. Stronger, supposedly less sensitive to humidity. Don't know the specifics, but it most certainly doesn't match up with wool or synthetics. Supposedly also less smelly than cotton. It's far more environment friendly to grow which is why it's mostly alternative circles propagating it. I could imagine it replacing cotton in polycotton blends or such, but these have been mostly phased out for "functional" clothing anyway.
As for merino wool, I always wondered wether one could not make thicker (more sturdy, less expensive) wool fibres less scratchy with chemical treatments. There are treatments to cover the fibre with a very thin synthethic coating (called "superwash"), dunno why they don't apply that to thicker wool to make base layers.
