• Hard to answer that question as there is insulation in the body and sleeves that you cannot see to evaluate that. The lining on the body is wool and the lining on the sleeves appears to be synthetic and then it's hard to know how much insulation is in there. A phone call to Icebreaker directly would probably answer that question.
    Answered on 12/17/2016 5:02:14 PM by didee99 from Colorado