This jacket is very nice. I have worn it when the temps were 25 degrees Fahrenheit and it kept me warm with just my Klamath hoody on underneath. I went with a size XL in the sanctuary set. I wear large in all other First Lite gear. I'm 6' 195 lbs and it fits perfect with layers! I was worried about the sleeves being too long and legs in the bibs but that isn't the case. If you are around my size go up to the XL and you will be happy you did.