Mt Washington 3
Mt Washington 3 on a Hennessy Ultralight Backpacker A-SymMt Washington 3 on a Bear Mountain Bridge HammockMt Washington 3 on a Warbonnet Blackbird

Mt Washington 3

5.00 out of 5
(4 customer reviews)

$359.95$379.95 $289.95$309.95

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Product Description

No more wrestling with pads inside the hammock. No more waking up cold in the middle of the night. The Mt. Washington under quilt works on any hammock – including all gathered end hammocks such as: Clarks, Claytors, Eagles Nests, Hennessys, Warbonnets and the unique Jacks ‘R’ Better Bear Mountain Bridge Hammock. It attaches to a hammock in under a minute with the included JRB Suspension System. Comes with a JRB silnyl compression sack that allows it to be stuffed to 8 x 8 x 9 inches.

Mt. Washington, at 6288 feet, is the home of the world’s worst weather: bitter cold, heavy fog, deep snow, and incredible wind … occasionally a beautiful day. To tackle the winter’s worst conditions, Jacks ‘R’ Better has designed a unique hammock under quilt with a dual differential cut, body contoured design and constant height radial baffles to achieve a 0-10 degree capability. These are the most capable and warmest commercially available hammock under quilts.

Activ-dri down™ – Activ-dri™ is a hydrophobic down treatment that keeps the down drier, while having no adverse effects on loft, fill power, or warmth retention. Activ-dri down is still down insulation and should be protected from direct exposure to moisture. All types of insulation, whether down or synthetic, will degrade in insulation capability if wetted.

Available Options:


  • Length: 77 inches (1.96 m)
  • Width: 42 inches (1.07 m)
  • Loft: 3 inches (7.6 cm)
  • Material: 1.1 ounces, 30 denier, ripstop nylon
  • Insulation: 800 fill power goose down
  • Weight: 23 ounces (0.65 kg)
  • Temperature Rating: 20° – 25° F (-7° C)

Special Needs?: See our Available Options

4 reviews for Mt Washington 3

  1. Jake
    5 out of 5


    I just received my quilt today. I placed the order over the weekend, but JRB was closed until Monday. I called on Monday morning to ask about expedited shipping. I was speaking to one of the Jacks. He told me that they typically arrive in 2 to 3 business days, so I should receive it on time. He also recommended a change to my order based on my needs, which I’m very thankful for now. Later that day, I got a notification that the underquilt was shipped with 2 day expedited shipping, and they didn’t even charge me for it. How awesome is that?! These guys clearly care about their customers, and they must be passionate about their products and the sport. I leave for my trip tomorrow and I can’t wait to try out this underquilt! It sure looks warm! I’ll update my review after I use it.

  2. Caleb Yagow
    5 out of 5

    (verified owner):

    just got my Washington 3 in the mail I have to work tomorrow but I hung it up anyway it was simple to hang on my hennessy hammock its about 45 degrees outside and so so warm in my hammock Im going to do a few nights in it this weekend it supposed to get below 30 but im not worried. love the stuff sack also.

  3. Richard Cunningham
    5 out of 5


    Outstanding Product. Easy to Install. We recived ours on Feb 15 2013. Like little boys we rushed outside and hung our Hammocks and installed our underquilts. The first night we had temps in the mid 30′s we used only a fleece sleeping bag liner. We both stayed warm. Last night tempature was 28 degrees we used our sleeping bags we were exstreamly warm. Had to vent all night Jack was availble to answer all our question prior to buying. Thanks for the help and a great product… Richard

  4. Scott
    5 out of 5


    Spent the weekend sleeping in my Hennessey hammock with my new under quilt. It got down to 28 degrees last night. It was so toasty I was coming out of my sleeping bag in the middle of the night. My brother in law was in his and had a similar experience.
    Jack was great and did a fantastic job advising me on this product. He did not steer me to the most expensive product but what was best or what we needed. The delivery was also fast and on time. I would recommend this quilt and JRB. Thanks Jack.


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