I have the KOM stuff and will use it tomorrow in -10-15 wind chills as I try to 45 some venison. I do find wind will go through it so I have to layer a wind blocker in up top. My stuff though wears like iron and is 15-20 years old. I find Filsons wool just as good though it is not washable but you'd better be very careful washing any KOM stuff too. I did have one KOM piece shrink two sizes after a cold water wash and air dry; may have been a QC miss but they replaced it speedily.