6'2", 195 lbs, 34" waist. The big one fits perfectly. If you like your underpants a little looser, the extra large size will suit you. The extra wide belt at the waist is fantastic, especially since the belt is made from the same fabric. I wore them today while working on my back 40 for about 4-5 hours removing bushes and creepers from ditches. The average temperature was around 30 degrees and I felt very comfortable, not too hot and not too cold. I have already bought Minus 33 products andβ¦