Nano Quilt 30°/40°F

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A simple, yet effective down quilt for lining our Nova Insulated Bivy. Or use it as a super ultralight standalone piece.  

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The Nano Liner is a down filled booster quilt dimensioned to fit inside the Nova Insulated Bivy

The design is simple, clean and lean, however it retains all the features needed to also do duty as a standalone quilt.

Available in 40°F or 30°F. Paired with the Nova and it's three options for synthetic insulation levels one can mix and match temperature ranges to suit a variety of needs from cold summers to deep winter use. See chart below.


Backcountry quilt style design with fully enclosed foot area.

Top neck drawcord closure with corner snaps.

Ultralight draft controlling under-body shock cord straps. 


Custom sizing is geared towards efficient use of materials to keep the weight at an absolute minimum. 

For ideal pairing with the Nova select same length (ie M > M) then follow these guidelines when considering the shoulder/foot measurements:

44" Nano matched to 28" Nova: Skinny folks, gram-weenies.

48" Nano matched to 32" Nova: Normal, all-round

52" Nano matched to 36" Nova: Bigger folks.

And the footbox:

38" Nano matched to 40" Nova: Up to size 11

42" Nano matched to 44" or 48" Nova: Bigger feet or a need for more room.

Resulting comfort temperatures when combining

the Nova Bivy with the Nano Liner Quilt:


Light as a Feather

This June I started using my Nano Summer Quilt, Custom 40°F, Size small 52" shoulder to hips width 38" foot. Weighing in at 12.94oz I hardly know it’s in my pack. Used for 10 nights so far and in temperatures ranging from 55-45f overnight, it has kept me nice and warm. I always worry about size and quality when ordering form overseas but Nunatak always gets it right with size and great quality of workmanship. I can see the Nano being my go-to quilt for summer backpacking adventures.

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Nano Quilt 30°/40°F

Nano Quilt 30°/40°F

A simple, yet effective down quilt for lining our Nova Insulated Bivy. Or use it as a super ultralight standalone piece.  

Product Options
Temperature Rating
40°F / 5°C
30°F / 0°C
Inside Length
To determine the correct length please refer to the measurements in the chart.
Overall Width
Footbox Size
The 38" footbox fit most normal sized feet without footwear.
Top End Closure
A standard quilt style drawcord across the top hem is the option here, and adds 14 grams depending on the width.
Elastic Drawcord in Channel, adds 12-14g
Shell Fabric

Typically listed from lightest to most durable. Please go to the Fabric Page for help choosing the shell material.

Liner Fabric
10d Black Taffeta - Lightest, most breathable
Down Type
Choosing Hyper-Dry moisture resistant down will help combat the effects of perspiration, misting tents and damp air. Nunatak products made with Hyper-Dry down will have a slight increase in bulk over those made with regular down. A 5% increase in fill weight also occur.
900 Fill Power Goose Down, RDS Certified
900 Fill Power Goose Down, Hyper-Dry, RDS Certified
Strap Package
This option adds 4 grams of non-removable hardware. The shock cords are an additional 6g
Down Overfill
Adding overfill can prolong the life of the down, help maintain loft during moist conditions, boost the temperature rating by a small amount and keep the down volume from shifting. Expect a weight increase ranging from one to six ounces depending on the product, the size and the rating.
Your Measurements
Optional: Fill in the blanks to ensure getting the best fit. No changes will be made to your size selections without approval
Shoe Size 
Stuff Sack
Our stuff sacks are pretty dope, but current weight saving trends in ultralight circles eschews this once crucial item. So, opt out and save $ while also being very current.