I still use my Cannibal (Oz company) synthetic layer for most races. It's old as fuck but awesome. Really soft. I have some other synth undershirts that are quite abrassive.
I do love my merino stuff (I'll be buying more Chocolate Fish soon) but the synthetic is thinner so better when you're riding hard. Merino I prefer for cold winter commuting duties.
I still use my Cannibal (Oz company) synthetic layer for most races. It's old as fuck but awesome. Really soft. I have some other synth undershirts that are quite abrassive.
I do love my merino stuff (I'll be buying more Chocolate Fish soon) but the synthetic is thinner so better when you're riding hard. Merino I prefer for cold winter commuting duties.