A waist high synthetic filled sleeping bag to be used with the Skaha APEX Hoodie as a complete sleep system.
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For more than half a century the climbers of the European Alps have embraced this concept for one or two night forays into the hills. Nunatak has given new life to idea of the historic 'Elephant's Foot' with the Akula.
For this modern rendition we use Climashield APEX insulation in three levels and a selection of super ultralight high tech fabrics.
Skaha Apex Hoodie, available here, and the Akula Apex half bag, both with Climashield synthetic insulation and an ultralight waterproof/breathable shell material, offers a supremely weather resistant bivy set up good to 40°..
At just 530g (18.7oz) combined for the jacket and half bag in size large, this fully customizable suite is surprisingly compact, versatile and reasonably priced, starting at $400 depending on sizing and options. Order the half bag on this page, the Skaha APEX pullover over here
The Apex insulation in the pictured setup above is the 2.5 oz/yd. Combined with other layers it should be good to 40° for brief stops, naps, recovery breaks. For a full night at those temperatures up the insulation to 3.6 oz/yd or 5.0 oz/yd.
Several shell and liner materials are available.
With the ultralight 0.74 oz/yd waterproof/breathable shell material AND the synthetic insulation there would be no degradation of the R-value due to dew, mist and body moisture. Even in light rain, with a little shelter from boulders or vegetation, one should be fine for several hours.
Typical users would be packrafters, bikepacking racers, folks doing FKT attempts, or any trip in mild, moist conditions, such as the west coast of Canada/Alaska.
For sizing of the Akula APEX half bag there's 4 choices in length and two footbox sizes, besides the full suite of Nunatak technical fabrics.
Another option for fine tuning the Akula Apex is an extended single layer fabric 'sleeve' permanently attached to the top edge of the insulated part. Long enough to cover one's head with a scalloped cut that makes the front lower than the back. Two drawstrings: one at the top of the half bag, operated from the inside, and another controlling the top of the sleeve. See pics below.
|Inside length||40" - 45" - 50" - 55"|
|Shoulder width options||N/A|
|Foot Area Circumference||38" - 42"|
|Weight, 0.66 Membrane shell/liner, 38" foot||40"L : 12.3 oz --- 45"L : 13.4 oz --- 50"L : 14.6 oz --- 55"L : 15.7 oz|
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