40° Arc Half Quilt

New product

A super light half bag / quilt hybrid creating a unique sleep system when used with our Skaha Down Hoodie, NOT included here!

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Custom item. Multi week lead time.


An ultralight quilt of a mere 8oz?

An ultra runner or adventure racer's dream come true? 

This ¾ length chest high Arc Quilt is not a stand alone product, but is designed to pair with our Skaha Hoodie. Together they create a uniquely versatile sleep system for the experienced backcountry traveler. 

The ease of use designed into this system is paramount while stressed and tired. 

Arriving at a recovery stop the jacket goes on immediately while managing chores. The quilt is donned when ready. An optional sitting position allows for refueling and nutrition tasks while still completely covered. A smooth transition to complete rest is easily accomplished.

The stock combo of Arc Half Quilt and Skaha Hoodie is comfortable at 40°F. Still very adaptable down to 30°F, the cold could start to find its way in. At 20°F it’s better to keep the stops brief and bank on calories and left over warmth to recover. In the frigid realm below 20°F you will certainly live on to tell, but consider this setup emergency equipment only.

A complete Quilt/Skaha Hoodie system configured in the lightest fabrics is about 500 grams in size large, and fits in two one liter stuff sacks. 

Nunatak’s Akula Half Bag and Kobuk Mountain Hoodie is a similar combination, but geared for winter use. 

Temperature Rating40°F / 5°C
Baffle height0.75"
Fits to Height Small: 5' 4"....Medium: 5' 10"....Long: 6' 3" ....XLong: 6' 8"
Inside lengthSmall: 44" ....Medium: 50" ....Long: 56" ....XLong: 62"
Shoulder width options44" - 42" - 40"
Foot Area Circumference36"
Differentially cut liner/shellNo. Custom option only
Fill weight, standard width, S - M - L - XL3.5 - 4 - 4.5 - 5
Weight, 0.8 Quantum shell/0.66 liner, standard width, S - M - L - XL7 - 8 - 9 - 10

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40° Arc Half Quilt

40° Arc Half Quilt

A super light half bag / quilt hybrid creating a unique sleep system when used with our Skaha Down Hoodie, NOT included here!

Product Options
Overall Width
Shell Fabric

Please see our Fabric Page for help choosing the right shell material

Liner Fabric
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. In some instances they may contain an additional 5% of fill weight.
Down Overfill
Cold sleeper? Consider adding a few ounces of extra fluff.
Top Cinch Cord
Under-body Strap System