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    Warmth that moves the way you do.

    The treestand at dawn. The third lift ride. The last hour of the ride home. HEATJAC™ keeps you out there longer, without the bulk that traditional insulation demands.

    Riders on snowmobiles crossing a snowy mountain trail
    1. Under the gear you already own
    2. Warmth without bulk
    3. Still. Quiet. Low-profile.
    A snowboarder in a helmet and goggles carves down a snowy slope, with HEATJAC CORE over her base layer under an open jacket

    From the treestand to the trailhead, most cold hours outdoors are spent waiting, watching or riding. HEATJAC goes on under the gear you already own and keeps your own heat working for you.

    Film

    From the HEATJAC CORE film.
    1. A hunter in a wooden blind with binoculars looks out over a misty valley at dawn, wearing HEATJAC CORE over a base layer under an open jacket
      A hunter in a camouflage hat and pants kneels on a forest slope at sunrise, wearing HEATJAC CORE under an open jacket

      Hunting

      The treestand at dawn.

      Long, still sits are where hunters lose heat. CORE goes on over your base layer and under your camo, with nothing to rustle, hum or snag. Add warmers to the pockets when the wait gets long.

      Best fit: HEATJAC CORE

    2. An angler on an upturned bucket beside a hole in the lake ice at sunrise, rod in hand, with an auger, a gear sled and distant ice shelters

      Ice fishing

      Hours over the hole.

      Ice fishing is a cold-floor, low-movement sport. CORE keeps the warmth at your core under the parka, so your hands stay free for the line.

      Best fit: HEATJAC CORE

    3. Two skiers in zipped shells and helmets ride an open chairlift above snowy pines, with mountains behind

      Skiing and snowboarding

      The third lift ride.

      Chairlifts are where riders get cold: wind, no movement, damp layers. CORE sits low under a shell and stays clear of pack straps and harnesses.

      Best fit: HEATJAC CORE

    4. Snowmobile riders crossing a snowy trail, the lead rider in a black helmet and riding suit

      Snowmobiling and sledding

      The last hour of the ride home.

      Wind at speed pulls heat from the chest first. CORE goes under the riding jacket, close to where you need it, without the bulk of another layer.

      Best fit: HEATJAC CORE

    5. A hiker on a snowy forest trail wearing HEATJAC CORE over a base layer under an open jacket

      Winter hiking and snowshoeing

      Start cold, stop warm.

      Moving makes heat and stopping loses it. CORE keeps your core warm at rest stops, so you are not adding and shedding layers all day.

      Best fit: HEATJAC CORE

    6. A camper in a zipped jacket and wool hat melts snow on a small stove beside a tent at dusk, snowshoes standing in the snow

      Winter camping and backcountry

      Camp chores at dusk.

      The hour between the last climb and the sleeping bag is the coldest of the day. Wear CORE under your camp jacket while you cook, melt snow and set up.

      Best fit: HEATJAC CORE

    7. A runner on a frosty lakeside path at sunrise, in a black jacket over a white top
      A race volunteer carries a bag and a case past the start area, wearing HEATJAC CORE under an open jacket, with runners behind

      Running and race days

      Start corrals and finish lines.

      REFLECT under a light jacket holds your own heat on the walk to the start. Coaches, crews and volunteers who stand all morning wear CORE.

      Best fit: HEATJAC REFLECT and HEATJAC CORE

    8. Two spectators in winter coats and hats sit beside an outdoor hockey rink with hot drinks, watching the game

      Spectators and sidelines

      Bleachers, rinks and sidelines.

      Cold seats and three periods of hockey. CORE goes under your coat and nobody can tell it is there.

      Best fit: HEATJAC CORE

    9. A wildlife photographer behind a long lens on a tripod on a frosty ridge at sunrise, cranes in the misty marsh below

      Birding and wildlife photography

      Waiting for the shot.

      Long stillness in a blind or on a ridge. Quiet warmth under your layers, with nothing to switch on or adjust.

      Best fit: HEATJAC CORE

    10. An angler in yellow rain gear and a life jacket fishes from the stern of a small aluminum boat on a misty lake at dawn

      Fishing and boating

      Cold mornings on the water.

      Wind and spray on an early start. CORE fits under foul-weather gear and a life jacket.

      Best fit: HEATJAC CORE

    how the architecture is applied

    • Under the gear you already own

      HEATJAC™ wears beneath your jacket, bibs, or riding gear. No new outer layer to buy, no change to how you dress.

    • Warmth without bulk

      The architecture captures the heat your body produces and broadens warmth from a compact source across your core.

    • Your warmth source, your call

      Compatible with widely available long-duration warmers. No proprietary battery to charge, carry, or lose.

    • Still. Quiet. Low-profile.

      Nothing that rustles, blinks, or bulges.

    uses

    Hunting and fishing · hiking and camping · skiing and snowboarding · motorcycling · sideline and spectator cold · everyday winter.

    Shop COREShop REFLECT

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