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First Lite Chamberlin Down Jacket dry earth
First Lite Chamberlin Down Jacket fusion
First Lite Chamberlin Down in the field
First Lite Chamberlin Down Jacket inside pocket
First Lite Chamberlin Down Jacket
First Lite Chamberlin Down Jacket
First Lite Chamberlin Down Jacket dry earth
First Lite Chamberlin Down Jacket fusion
First Lite Chamberlin Down in the field
First Lite Chamberlin Down Jacket inside pocket
First Lite Chamberlin Down Jacket
First Lite Chamberlin Down Jacket

First Lite Chamberlin Down


With over 30% more down fill than the closest competitor and weighing in at a mere 700 grams., the Chamberlin Puffy provides the industry's best warmth-to-weight, highly-packable insulation for the coldest conditions. Utilizing a revolutionary blend of premium, 800-fill down and 37.5 fibers First Lite have created a jacket with greater loft and moisture transfer rates than conventional down jackets. Body-mapped to maximize heat retention and minimize weight, the Chamberlin is engineered with non-sewn-through baffling in the core and a heavily insulated collar and 3D Turret hood that still preserves field of view. Lightweight and compressible, this jacket is the perfect insulator for late-season backcountry hunts. Tricot-lined hand pockets are oriented to the inside of the down fill to protect hands when temps drop, while interior stash pockets provide transparent storage for gloves, hat or a GPS. The exterior of the jacket is treated with a DWR to repel moisture and cut wind while an articulated fit protects range of motion. All of these features come together to make the Chamberlin Jacket the answer for the hunter who demands serious warmth for extended winter season alpine expeditions.


    • Over 30% more down than the closest competitor
    • Revolutionary, 800 fill-power 37.5-blended down
    • Body-mapped, non-sewn thru, box baffle construction for maximum warmth
    • Exclusive 37.5 Active Particle Technology exhausts moisture and helps maintain optimal core body temperature
    • Advanced DWR exterior repels snow/rain and blocks wind
    • 3D Turret™ hood C187with box-baffle construction for maximized FOV and warmth
    • High baffled collar locks in heat and protects your face from the cold
    • Exterior cord routing for ease-of-adjustment without having to open the jacket and risk losing critical heat
    • Articulated fit for enhanced range-of-motion
    • Two internal mesh pockets
    • Warm, tricot lined, zippered hand pockets
    • Weight 700 grams

      Sizing Chart
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      First Lite Camouflage
      First Lite Camo


      First Lite patterns obliterate the human shape by utilizing a proprietary mix of nature-based algorithms in coordination with disruption and focal confusion techniques. Put more simply, the relationship between colors and shapes has been specially designed to fool the brain by resembling recurring patterns found in nature. Derived from the golden ratio found throughout the natural world, Specter™, Typha™, Fusion™, and Cipher™ dissolve into their surroundings, unlike anything else.
      First Lite Specter, Typha, Fusion, and Cipher are the most versatile patterns available to hunters due to their careful design and ensured concealment no matter the proximity, season, or terrain. Created using the same scientific platform, all four of First Lite's proprietary camo patterns use trademarked technology, which provides equally exceptional concealment at close range and a distance. When it comes to whitetail hunting, First Lite Specter uses the proven technology of its predecessors (Fusion and Cipher) but expresses shapes, colors, and fragmentation unique to the whitetail environment and tree canopy. Similarly, First Lite Typha expresses environmental abstracts consistent with marsh and field environments fit for the waterfowl hunter.

      First Lite Comouflage Technology

      First Lite Fusion

      Fusion has become the most trusted pattern in breakup camouflage. From western lichen, sage, and pine to eastern deciduous hardwoods, the Fusion pattern and color palette are engineered to excel in a vast array of landscapes. Hunters virtually disappear into their surroundings at any distance – short or long – lending confidence and near-perfect stealth, whether in the trees or on an alpine ridge.


      First Lite Cipher


      First Lite's Cipher pattern leverages the proven working principals of Fusion and applies them to landscape palettes with less color. Cipher emphasizes the narrower color spectrum found during the autumn and winter months in both hardwood and western environments. With its muted coloration and Fusion-inspired DNA, Cipher is a deadly weapon in every hunter's arsenal.


       First Lite Typha

      First Lite 37.5™ Technology

      More Breathability Means You Stay Drier than the Competition

      When First Lite engineered their Outerwear Collection, they looked closely at every fabric technology in existence. Having the pick of the litter, from better-known outerwear technologies to more niche, lesser marketed performance fabrics. The truth in outerwear manufacturing is that the brand in question can generally use whichever fabric they choose. The costs vary as does the performance, but if a brand is willing to pay for the best, they can choose to incorporate it into their offerings. First Lite chose 37.5 because third party empirical testing as well as extensive field use their our own employees left them greatly impressed by the superior performance of the fabric. The bottom line is that 37.5 breathes at a rate that is anywhere from 50% to 300% better than any of its competition, while offering waterproof levels that were within a 5% tolerance of our competition.

      First Lite's DNA is active, extremely vigorous mountain hunting. Based in the Rocky Mountains and literally testing products year round in some of the steepest, most demanding terrain in North America. Breathability becomes paramount when you're climbing significantly steep, rugged slopes with heavy packs in less than ideal weather conditions. If you sweat under your outerwear and the fabric doesn't allow that moisture to escape, you might as well expose your base layers to the elements and skip the outerwear all together. 37.5 technology does the absolute best job of transporting that moisture from your base layers to the outside of the First Lite garment so that you can remain safe and dry while exerting yourself in the most brutal of weather conditions. This is why First Lite selected 37.5 Technology over other fabrics and has enjoyed award-winning products ever since.

      The Science behind 37.5 Technology

      Comfort in clothing is greatly influenced by the temperature and humidity next to skin known as the microclimate. For the average person, the body strives to maintain an ideal core body temperature of 37.5° C. You are most comfortable when the microclimate next to your skin has a relative humidity close to 37.5%. When you are in this ideal 37.5 comfort zone, you are also in your ideal performance zone. 37.5 technology helps your body manage the moisture in your microclimate to keep you in this “37.5 zone” of comfort and performance.

      Your body already has the ultimate thermo-regulating system. The perspiration vapor that comes off of skin during activity cools the body when working hard. In fact, each gram of evaporated sweat releases 580 calories of stored heat. Unless this water vapor can be removed from the microclimate, it builds up in clothing, footwear, or gloves and creates a clammy and uncomfortable microclimate. 37.5 technology works to enhance the body’s natural cooling mechanism—the body puts out sweat to cool it down, 37.5 technology removes it from the microclimate.

      With 37.5 technology, patented active particles permanently embedded at the fiber level capture and release moisture vapor. Not only do these active particles provide 800% more surface area to the fiber, they also provide a unique driving force to remove moisture vapor unlike any other technology. By actively responding to body heat, the active particles use this energy from the body to accelerate the vapor movement and speed up the conversion of liquid to vapor, significantly increasing drying rates. This means the hotter the user gets, the stronger the driving force removing moisture becomes—and the more comfortable the garment remains.

      37.5 technology works to keep the optimum relative humidity in your microclimate so your body more efficiently maintains an ideal core temperature, enabling you to perform better, longer. Fabrics made with 37.5 technology dry up to five times faster than similar fabrics, diminishing wet cling. 37.5 technology is made with naturally derived materials so there are no harsh chemicals to irritate your skin. 37.5 active particles are permanently embedded into yarn and will never wash out or degrade.

      Customer Reviews

      Based on 5 reviews Write a review

      Customer Reviews

      Based on 5 reviews
      Cam Henderson
      For a puffer jacket, You can't beat it.

      I've been looking around for a new puffer to wear through my winter hunts. After trying on quite a few different brands the Firstlite Chamberlin stood out through it's comfort and lightness. After my first trip with it packed, the temperatures got well below the negitives and it kept me bloody toasty.

      Splash out and get one. Just do it.

      Sam Manson
      Seriously warm

      Nothing else even comes close to how warm and packable this thing is

      Paul Marshall
      Top rated puffer

      What a fantastic piece of kit well worth the money quality made and seriously warm and works well as a sleeping pillow

      Gary Trigg-Graynoth
      Chamberlain Jacket

      Well I um’ and r’d about buying this jacket for a while as thought I wouldn’t use it. Forward a few months and a trip to Canada booked on 31st Dec ( its cold there then) i thought i need a new jacket and it can double up for hunting so can justify the cost a little more. Ordered a large and its spot on for fit with a tshirt and hoodie underneath. plenty of room with arm movement and quiet. Seems to be allot of thought gone into this jacket especially with the hood. Wore this out a few evenings ago and was toasty, will see how it fairs in -20 when I go to Canada but after now owning a fair bit of first lite hear im sure it will perform well. I tried the Kuiu jacket as well and not that impressed as was not as warm and there was quite allot of arm restrictions. Felt that the quality and finish of the FL jacket was better as well.

      Tim Norris
      5 Star puffer jacket !

      An absolute cracker of a puffer jacket ! Lightweight made and designed for going father for longer.
      Definitely recommended for your alpine hunting