Comfort Rating: -60°F Over 600g insulating power, including 200g AirBlaze® polyester insulation WarmPlus graphene lining heats up 4-times quicker than other linings but cools quickly when removed from body heat Take performance to the extreme - the Extreme Hooded Jacket has your back. This heavy-duty insulated coat keeps you comfortable down to -60°F with 600g insulation plus 200g AirBlaze® polyester insulation to protect you from freezing weather. What's the secret to such amazing warmth in subzero conditions? A WarmPlus graphene lining that heats up 4 times quicker than other linings absorbs your body heat and then transfers it back to you for warmth so strong you just might have to open the zippered under-arm vents to let in a little cool air when work starts heating up.