Feel OK compare to another brand of Merino Wool Boxer I purchased on the same time. That one doesn't even fit what its size suppose to be fitted. I gave it one star on Amazon reviews.

However, for this one I don't feel cool, in the opposite way I feel much warm when I wear this boxer. It may because this is somewhat small and tight, and I don't think that the "sweat proof" would neutralize the moisture it causes.

After I wore it 15 minutes, I feel little itchy. Curiously, I am not allergic to merino wool. Just in case, I throw it away.