HammockGear Incubator 20°



Lightweight for its warmth, this is the cornerstone…

Rating: rated 4.5 of 5 stars
Source: bought it new
Price Paid: $225


Lightweight for its warmth, this is the cornerstone of my hammock insulation system.


  • Weight-to-warmth ratio
  • Comfortable


  • Learning curve

The Hammock Gear Incubator 20 is my primary hammock insulation. I've had mine a year. It's been out over 40 nights, car camping, overnight backpacking, and several 2-5 night backpacking trips. It's seen temps from the 80s to the single digits, in all kinds of conditions here in the Midwest.

Down quilts are lighter compared to synthetic quilts and more comfortable than closed cell and inflatable pads. If you are willing to spend the money for a down quilt and you don't plan on spending a ton of time sleeping around or below freezing, you won't go wrong with this quilt, nor with Hammock Gear. Below the girlfriend is warm and cozy, she won't get out of bed!:
Compared to other down under quilts from similar sized cottage manufacturers, it runs a little lighter for fill weight, is about the same price for size and warmth rating, and quality is similar. I've experienced minimal down loss from this quilt with the occasional feather poking its way out.

My main top quilt/sleeping bag is a Hammock Gear 20 Degree Burrow, which also has had very minimal down loss and only one loose thread on a seam after a year of use.

Here the Incubator is snugged up to a Hennessy for a chilly fall evening.
The only con I can list is the learning curve and lack of included instruction manual. It's pretty easy to use from about 40 up, lower temps than that can require some fiddling with the suspension. With hammocks in cold weather it's all part of a system, below the quilt is tucked away with the hammock in a winter sock, with a Gossamer Gear Thinlight 1/8 pad, medium base layers, and a heavy synthetic coat allowing me to sleep comfortably in the 20s:

If it's too hot it can be loosened to allow airflow, or simply pulled to the side of your body. Here it is on a Dream Hammock doing warm weather work:


The Dream Hammock above is an 11 footer, my HG UQ is standard length and width, and it's large enough to easily cover my 5'9" frame on the asymmetric lay. The outer materials are thin, but this is necessary to achieve 22 ounces.  

One rainy night I set my fly incorrectly and exposed the quilt to a few hours of drizzle. The rain did soak through, but the water resistant treated down seemed to dry quickly. Brush has poked a small hole in the bottom of the tarp. This was quickly taped and hasn't been a problem since:


All in all the Incubator 20 is a solid value. The 20 degree temp rating is a little low I think, but other companies claim similar ratings based on the same amount of down fill and loft. If you think you will spend a good amount of time at or below freezing, I would recommend going with a 0 degree quilt, with overstuffing!


Nice review, Andy! Thanks for sharing it.

4 months ago

This is a solid hammock underquilt for pretty much…

Rating: rated 5 of 5 stars
Source: bought it new
Price Paid: $189


This is a solid hammock underquilt for pretty much any weather situation I find myself in here in the Pacific NW. I've used it winter camping, as well as through the spring and summer.


  • Warm
  • Easy to use and setup

I got this during Hammock Gear's annual Cyber Monday sale last fall for a significant savings off the normal price. And then I waited...and waited some more, which was completely understandable considering the huge number of orders I am sure they received.

A month later, I received my quilt in the mail and made plans to get out with some friends on a snow camping trip on Mt. Hood. We snowshoed into a campsite and spent one night in the snow where it probably got down to the low 30s, with small bits of snow coming down too. I used my Mountain Hardwear UltraLamina 15F sleeping bag as a top quilt and between the two quilts I was snug as a bug in a rug and toasty warm too.

I have since used this under quilt with an Enlighted Equipment RevolutionX 20F top quilt from winter to summer all over Oregon, Washington, and Montana in various weather conditions and usually at elevations above 3,000 ft with no issues. I have stayed warm, never had CBS and have enjoyed this product immensely.

It fits easily in an 8L Sea to Summit dry sack, but I usually just cram it into the bottom of my backpack in the pack liner.


Hey, Pilgrim, can you add a link to the review. Also, do you have any specs on weight. FINALLY, do they do a Cyber Monday clearance every year?

3 years ago

As far as I know they do a Cyber Monday sale every year. The best place to know the sales is on the Hammock Forums.

3 years ago

They won't allow an external link...sorry!

3 years ago

I know hammockforums. Thanks!

3 years ago
Eric Owens

Praise hail the hammock forums! Lots of good advice and peeps to help with any question. I'm currently waiting on my incubator 20 as we speak.

2 years ago

Highly compressible down filled three-quarter underquilt…

Rating: rated 4.5 of 5 stars
Source: bought it new
Price Paid: $220


Highly compressible down filled three-quarter underquilt made me comfortable in my Hennessy Hammock in cool weather.


  • Lightweight
  • Functions as advertised


  • Down filled - Keep it dry!

Quality made American product.

HammockGear Incubator 20°


The HammockGear Incubator 20° is not available from the stores we monitor.

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