For the coldest days on the sled, pack along the 509 Duke Trigger Finger Mitt. Super warm thanks to Thinsulate™ insulation on the back of the hand and the palm, combined with a waterproof lining, these mitts get their biggest benefit from the trigger finger, which adds dexterity for reaching the brake when you need it. Top Grain Goat leather construction for dexterity, great, and comfortLaser Grip palm, laser tech and tack treatment embedded in leather for solid grip to the bars5 Flex Zones over knuckles for adding dexterity and protection600GM Thinsulate™ insulation - back of hand200GM Thinsulate™ insulation - palmWaterproof breathable Hipora® membrane constructionFull gauntlet with Speed Cinch and gauntlet hem adjustment