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Incubator Econ 40



Hammock Gear Under Quilts

Down under quilts have proven to be, without question, the preferred choice for insulating the underside of the hammock. Due to the weight, compressibility and versatility, they outshine the alternatives by a landslide. Their thermal efficiency has allowed brave campers to push the boundaries of cold weather hammocking. Virtually every hammock camper has experienced - through his or her learning curve, the dreaded CBS, or "Cold Butt Syndrome". And virtually every owner of an under quilt has effectively learned how to avoid it. Once you have experienced a down under quilt, you will "never go back".

Hammock Gear provides a full-length under quilt - the Incubator Econ, and a 3/4-length under quilt - the Phoenix Econ. They are known by many to be the most effective on the market today. One of the primary reasons is this: the Incubator Econ and Phoenix Econ are the only commercial under quilts designed with a contour which mimics the shape a person makes when they are laying in a hammock. One of the added benefits of this construction technique is that it leaves a "flap" of fabric along the top and bottom of every down filled chamber. This extra fabric acts as a "floating baffle" which stabilizes the down and helps prevent its shifting. Another reason our UQ's are popular is this: they contain the ideal amount of down stability - the down stays put when it should, but the design allows for enough manual shifting of down when necessary.


All quilts are made to order.  Please inquire with for current lead times.

All of our quilts ship with a 24" x 36" Storage Sack and Stuff Sack for backpacking.


About the Incubator Econ 40˚

The ULTIMATE underquilt for guaranteed comfort at a low price... The Standard length Incubator Econ 40° is long enough to generously cover most hammock campers up to about 6’ 1”.  With 800 fill power DWR Treated Grey Duck Down, this underquilt will protect you in temperatures down to 40°. If you are looking for an underquilt that is hassle free and will allow you to enjoy your hammock for more months of the year, you have found it.

The Incubator Econ comes with 9 anatomically contoured, differential cut baffles that run the length of the quilt. One of the things this construction technique does is to greatly reduce the shifting of down that is sometimes more noticeable in quilts made with premium goose down.  This is one of the reasons Hammock Gear quilts are always 15-20% overstuffed. The differential cut, contoured baffles also provide the highest level of fit which is critical to keeping warm.  
The Incubator Econ comes complete with our state of the art shock-cord suspension system, storage sack, and a stuff sack.


Under Quilt Advantages

Chances are you are already aware of the advantages of down under quilts. To summarize: 

  • thermal efficiency
  • weight savings
  • volume savings
  • ease of use & adjustment (especially compared to a pad)
Incubator Econ 40˚ShortStandardLong
Fill Weight6.6 oz7.7 oz8.8 oz
Total Weight18.25 oz20.25 oz22.25 oz


We utilize the finest 800 fill power, water-resistant grey duck down on the market in all of our Econ quilts. It is tested and certified by the International Down and Feather Testing Laboratory.



All Hammock Gear Econ quilts are made of Ion fabric. All Ion fabric is specifically designed nylon taffeta which is manufactured for Hammock Gear. This material is a 20 Denier nylon taffeta with a DWR (durable water resistant) coating, which makes it great fabric for lightweight quilts. Weight is 1.1 oz / yd²


All of our under quilts make use of baffle (also known as "box baffle") construction. This means that the seams between the down-filled chambers are not sewn through, but instead consist of a fabric wall about .75 to 3 inches tall, depending on the model.


Temperature Ratings

At Hammock Gear, we use temperature ratings which are very conservative. Compare them in the marketplace and you will agree. Here is a point we wish to emphasize: the first and most important step you must take when choosing an under quilt by temperature is to Know Thyself. Are you a Cold sleeper, a Warm sleeper, or maybe a Really Warm sleeper? Factor this into your selection process and you will be much better off. With under quilts, the more you experiment, the more you will dial this in.

There are 3 review(s) for Incubator Econ 40

  • Excellent In Every Way

    by Unshavenman – 19th Apr 2017

    I already own a 20 degree incubator but wanted something lighter for warm weather hanging. The Incubator Econ 40 meets my needs perfectly. The build quality is of course excellent, and the price point cannot be beat. I honestly don't know how you folks can put out such an excellent product at this price! Thanks!

  • Great buy

    by Greg – 15th Apr 2017

    I have other cold weather HG quilts and was looking to buy a warm weather setup to replace my zlite pad. When the econ quilts came out I took the plunge quickly. I waited to do the review until after I used it. My initial visual impressions were that it is on par with my other HG quilts for build quality. It feels almost the same and the material looks slightly different but not in a bad way. The first night the temperature started out in the 50's and everything was great. The forecasted low was 37, but it ended up getting down to 32, I use a remote Garmin sensor to get the actual temperature​. I ended up getting a little chill but put on my jacket and was fine. The quilt stayed in position and nothing loosened up overnight. I am a cold sleeper so am am really happy with the results. Hopefully this will help you make your decision if you're on the fence about an econ or just new to hammock camping.

  • Are You Kidding Me?

    by Kip Bissell – 31st Mar 2017

    I was in the market for a mild weather UQ and bought the 40 degree Econ Incubator as soon as they launched. Received mine today and am blown away at the quality of the build and materials! This UQ isn't some cheap version! It's filled generously with down and is super light! I have no doubt that I can do 40 and below. Amazing product!