Mt Wahington 4 on BMBH

Mt Washington 4

5 out of 5 based on 8 customer ratings
(8 customer reviews)

$429.95$459.95 $294.95$324.95


Product Description

Holiday Special
Note: MW4s are temporarily out of stock. We are accepting backorders in order to honor the sale price. We expect they will be available for shipping around the first week in January.

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: 4 inches (10 cm)
  • Material: 0.9 ounces, 20 denier, ripstop nylon
  • Insulation: 800 fill power goose down
  • Weight: 29.5 ounces (0.84 kg)
  • Temperature Rating: 0° – 5° F (-18° C)

Special Needs?: See our Available Options

8 reviews for Mt Washington 4

  1. 5 out of 5

    (verified owner):

    To me customer service is every thing, that being said Jack was so supportive with all my questions, I have a Lawson blue ridge hammock and the quilt with Jacks help works great. If your looking a under quilt look no further, this quilt is high quality and very very warm.

  2. 5 out of 5

    (verified owner):

    Just got my Washington 4. Researched a lot of quilts and finally pulled the trigger on this quilt. Great customer service and the quilt is toasty warm and very light. Highly recommend. Thanks Jack.

  3. 5 out of 5

    (verified owner):

    I bought this underquilt for my App Trail thru hike in 2015. The 4th night I was out (March 3rd or 4th) it began raining ice and blowing snow. In a matter of an hour it went from a pleasant hike on the mountain to a dangerous ice blizzard. After what seemed like forever I got my hammock up (being the wind was blowing like mad and my fingers were numb it took a bit). Once the hammock was up I easily put the underquilt on and crawled into my hammock. I was cold and somewhat terrified as my hammock was swinging from side to side with the intense gusts of wind. This underquilt kept me from getting severe exposure. The wind did cause some cold spots which made me need to reposition myself every few minutes, but otherwise I was warm.

    I used the quilt for another 2 months and every night I was warm and comfortable even in lousy weather. As the weather got warmer I sent the quilt home (its a bit bulky and I was going ultralight (12-15lb pack) at that point). I went thru 4 lightweight sleeping pads (to fight off cold butt syndrome), trying each one out and sending it home. I ended up settling for an exped synmat. None of them were as warm and comfortable as this underquilt. This year Im just gonna order a lighterweight quilt and ditch the pads. You just cant beat them.

  4. 5 out of 5


    Broke out the hammock gear last night. Temp was 30 deg. The mt Washington under quilt kept me warm all night. Thanks for a good nights sleep. Great product

  5. 5 out of 5


    New to hammock camping. I did extensive research and ended up choosing this product. I took my under quilt out of the packaging 10 minutes before setting up camp at midnight. I promptly installed the under quilt incorrectly. The gusty 20 degree mountain air gave me a bit of a cold back and butt. Night number two brought the same conditions, and this time I took time to install the under quilt correct…. best/warmest sleep I have ever had outdoors. Period. Excellent product. Great customer service. Fast shipping. Made in the USA. Can’t wait to do some deep winter camping with this.

  6. 5 out of 5


  7. 5 out of 5


  8. 5 out of 5


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