Originally Posted by
powerband
Merino wool regulates body temperature better than most synthetic material, cold or hot. It also is unlikely to collect odor, a common problem found in many synthetic material. Best combo is to have merino wool next to your skin, and then an outer shell that is wind-proof.
Merino wool FTW, nex to to your skin is key, does not get smelly, stays warmer than anything else when wet.