Review on Merino Wool Men'S Thermal Underwear Base Layer Set - Naturwool John Top And Bottom by Brett Martinez

I'm 5'9 180lbs I purchase size XL and it fits with extra room to fit a larger person. I would say this fits nicely due to the stretchyness but anyone smaller than me should get a smaller size. I really like these. I'm going to buy some of the lighter weight ones to have options on days when it's not as cold.