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Experience Mother Nature in

All Her Elements.

The New Standard

Changing the Way Revolutionary Brands Think

What is DownTek™?
Only the most amazing thing since the umbrella. Here's the thing: Down is the single best insulation that exists. Period.

Its Achilles heel? Water. Rain. Sweat. Snow. Anything wet. Mother Nature designed down clusters to trap pockets of air. Those pockets are what insulate, keeping you warm and comfortable. Then moisture comes along and deflates the pockets of air, eliminating down's ability to insulate.

Enter DownTek™ Water Repellent Down. DownTek™ shields those insulating-air-trapping-clusters from all wet things.

DownTek™ Water Repellent Down is available in products from your favorite and most trusted brands.

Stays Dry

  • Absorbs 30% less water than untreated down
  • Dries 60% faster than untreated down
  • Retains significantly more loft than untreated down after exposure to moisture


  • DownTek products can be washed without losing the ability to repel water
  • Best results when washed using Grangers Down Wash.


  • DownTek™ retains same fill power as untreated down
  • Water repellent treatment adds no measurable weight
  • Products with DownTek™ remain drier and lightweight longer


  • All natural, non-synthetic treated down
  • PFOA & PFOS free
  • Environmentally safe

The Brands Using It

  • Big Agnes

  • Women's Shovelhead Hooded Jacket

  • Based out of Steamboat Springs, Colorado, Big Agnes is a small company dedicated to making quality, dependable backcountry gear. Led by a team of nature-loving-adventurers, Big Agnes continuously creates award -winning products designed to help people get out and explore Nature.

    For additional DownTek products visit

  • Brooks Range

  • Mojave Down Jacket

  • A small, California-based company, Brooks Range is led by a team of mountaineers dedicated to providing purpose-designed outdoor gear for alpinists, backcountry travelers, and professional mountain and ski guides.

    For additional DownTek products visit

  • Dynafit

  • Cho Oyu Down Jacket Men

  • Lightweight down jacket with exceptional warmth and technical detailing. The DownTek™ treatment makes the high-quality European down antimicrobial and water resistant, thus it keeps you warm even when wet.

    For additional DownTek products visit

  • Eastern Mountain Sports

  • EMS Mountain Light 15° Sleeping Bag

  • Eastern Mountain Sports offers an extensive selection of top-quality outdoor gear and apparel. Based in New Hampshire and inspired by the New England landscape and extreme weather conditions, EMS is committed to keeping you safe and comfortable as you explore the great outdoors.

    For additional DownTek products visit

  • Enlightened Equipment

  • Revelation Quilt

  • Enlightened Equipment is a Minnesota-based company specializing in handmade, ultra lightweight sleeping quilts, hammock underquilts, and outdoor equipment ideal for the demands of long distance backpacking, bikepacking, paddling, wilderness packrafting, mountaineering, and backcountry hunting. Originally established in 2006, Enlightened is rooted in innovative design and quality craftsmanship to keep peak comfort and performance at the lightest possible weight.

    For additional DownTek products visit

  • Jottnar

  • Fjörm Green

  • A European based company founded by two former Royal Marines, Jottnar creates high-performance apparel that goes through rigorous testing at each stage of development. Produced in limited quantities, Jottnar clothing is designed for the serious adventurer in the most extreme conditions.

    For additional DownTek products visit

  • Kathmandu

  • Pathfinder v2 Sleeping Bag - Orange Grey

  • Kathmandu believes that nature should be explored by adventurers at every level of experience. They offer an extensive range of outdoor gear, clothing, and equipment that provide everyone - from entry level to professional - the opportunity to explore the great outdoors and create their own adventures.

    For additional DownTek products visit

  • L.L. Bean

  • Ultralight 850 Down Jacket

  • L.L.Bean is an industry leader in producing quality outdoor gear and apparel. LL Bean remains committed to the same honest principles upon which it was built – a focus on the customer, continuous product improvement and innovation, respect for people, preservation of the natural environment, and a 100% satisfaction guarantee.

    For additional DownTek products visit

  • Millet

  • Trilogy DownTek Jacket

  • Millet is a leading European brand with a strong foundation in hiking gear. Accredited with the invention of the backpack, Millet continues to focus on designing cutting edge technical products for hiking, climbing, skiing, and all things mountaineering.

    For additional DownTek products visit

  • Mountain Designs

  • UltraTek 280 Down Sleeping Bag

  • Mountain Designs is a cutting edge leader in the outdoor and travel industry dedicated to providing quality, functional climbing gear and apparel for everyone – no matter their level of expertise. With a focus on all things mountaineering, Mountain Designs is committed to helping you reach new heights.

    For additional DownTek products visit

  • Nemo


  • Known for their numerous awards, NEMO continuously raises the bar for innovation and creative use of available technologies in the world of outdoor equipment. Based in New Hampshire, NEMO Equipment was established with the intention of bringing high-level design and engineering to the outdoor industry.

    For additional DownTek products visit

  • Orvis

  • Targhee Lightweight Down Jacket

  • Finally, the feminine version you've been requesting of our best-selling men's Targhee Jacket. This wonderfully lightweight and exceptionally warm jacket lets you lose the layers. Insulated with 800-fill down in unique quilted channel chambers that efficiently retain warmth without additional bulk.

    For additional DownTek products visit

  • Re:echo

  • Men’s Hybrid Down Jacket

  • Based in Hong Kong, Re:echo is a forward-thinking company designing fashionable performance apparel for outdoor adventure, travel, and active lifestyle needs.

    For additional DownTek products visit

  • Salewa

  • Spice +3 Sleeping Bag

  • This sleeping bag with recycled polyester fiber PrimaLoft® fill offers extraordinary warmth-to-weight performance and is extremely compressible. A lightweight summer sleeping bag, it is ideal in warmer weather. Equipped with Silverized technology utilizing silver ions, the sleeping bag also stays fresh and odor resistant

    For additional DownTek products visit

  • Stio

  • Hometown Down Jacket

  • Based in Jackson Hole, Wyoming, Stio was founded to inspire connection with the outdoors through beautiful, functional products infused with the soul of mountain lifestyle. Stio designs apparel you can live in - in both the epic and quieter moments of outdoor life.

    For additional DownTek products visit

  • Zerogram

  • Diamir EX Sleeping Bag

  • ZEROGRAM is an outdoor brand that develops very lightweight backpacking equipment for adventurers by using innovative materials and design. Since 2015, ZEROGRAM has used goose down that is RDS Certified. RDS stands for the Responsible Down Standard, which is one way we help ensure the ethical treatment of animals. The RDS certified down is then treated with DownTek water repellent. The Diamir EX sleeping bag was released in January 2016. Using EN 13537 testing, the Diamir EX Sleeping Bag received a temperature comfort rating of -24 F. The Diamir EX was developed for outdoor enthusiasts who enjoy exploring extreme environments.

    For additional DownTek products visit

  • Zajo

  • Moritz Jkt

  • Versatile down hoody jacket made from water repellent DOWNTEK white goose down and lightweight PERTEX® Quantum fabric. Works as a standalone piece for cool, dry weather or as a warm mid-layer.

    For additional DownTek products visit

Interested in using DownTek™ for your product? Contact us for more information.

Down is in our DNA.

The Technology

Nature + Science = Downtek

Our proprietary, cationic treatment creates surface tension on the down cluster. When molecules of moisture encounter DownTek™, the moisture is forced to collect into a sphere shape and roll off the down cluster rather than adhering to and soaking into it.

RDS Certified

DownTek and DownTek ZeroPFC are brought to you by Down Decor, a company fully committed to the values of the Responsible Down Standard.

"Down is great until it gets wet...but DownTek™ repels water while maintaining loft, temperature range and packability..."

September 2012 Performance Test, Wired Magazine


  • Ultralight 850 Down Jacket with DownTek™

  • Hi. I'm Brent Vanni from the L.L.Bean product development team. We've made our top-rated Ultralight 850 Down Jacket even better, with new, innovative DownTek water-repellent down. This exceptional value earned the Ultralight 850 Down Jacket the prestigious Editors' Choice Award from Backpacker Magazine for 2012. When this exclusive nanotechnology is applied to down clusters, they absorb 33 percent less moisture and dry 66 percent faster. As a result, DownTek makes nature's best insulation even better, keeping it dry and lofty so it can trap heat and provide warmth even in wet conditions.

  • Big Agnes Bellyache Mtn SL

  • Drew discusses the features of the Bellyache Mountain SL 15° Traditional Mummy Sleeping Bag to the backdrop of beautiful downtown Steamboat Springs, Colorado.

  • Everest 50th Anniversary Karakorum Sleeping Bag by Eddie Bauer

  • Built and tested by our Eddie Bauer FIrst Ascent guide team, the limited-edition Everest 50th Anniversary bag is the pinnacle of hydrophobic down technology in sleeping bag form. Field tested in the most extreme conditions, and confirmed to be the best by independent labs, StormRepel™ Down powered by DownTek™ is the leading technology to keep you warm even in the wettest conditions.

    Our original Karakoram bags became legends in the mountaineering realm. Our new hydrophobic, high-tech evolution is the next step for ultimate, ultralight performance in the highest and coldest environments.


What is DownTek?

A water repellent treatment that allows down to retain its ability to loft and insulate even when wet.

How does it work?

Our proprietary treatment creates surface tension on each individual cluster of down, so instead of deflating the pockets of air that trap warmth, the moisture has no choice but to bead up and roll away.

Does it make the down heavy?

Nope. DownTek adds no discernible weight to the down. So if you're hiking Mt. Everest, don't worry about your jacket weighing you down (don't you love a pun?).

Is DownTek environmentally safe?

Yes! No PFOAs or PFOSs are used in our proprietary treatment. For a carbon-free alternative, please see DownTek™ ZeroPFC™

Ok, so you're not hurting the environment, but what about the ducks and geese?

Glad you asked. Down is a by-product of the meat industry. That means we only use down obtained from birds already being used for their meat.

Can I wash my DownTek product?

Absolutely! Because liquid detergents contain solvents that strip down of its natural oils, leaving it less able to loft and insulate, as well as leaves behind a residue that can interfere with a water repellent treatment, we recommend Grangers Down Cleaner. Grangers has specially designed their detergent with down in mind. Their down detergent cleans the down without stripping it of its natural oils and will not leave any residue that would interfere with the products' ability to repel water.

Why not just use a synthetic fill?

The down cluster is really amazing. Its three-dimensionality combined with its nearly weightless microscopic filaments make it the perfect insulation for trapping air and providing warmth. None of the oil based, polyester synthetics available have managed to crack the magic recipe that Mother Nature has come up with.

What's on your mind?

Thanks for your inquiry, we'll be in touch soon.

Contact Us


Media Contact

Gordon Wright

Outside PR