A backpacking quilt with dual type insulation, layered for efficiency and function.
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The Nebula is a hybrid backcountry quilt comprised of two distinctly different insulation types permanently combined into one sleep system. The outer layer is APEX, a synthetic continuous filament know to be both durable and long lasting. Inside is high loft goose down in an advanced box baffled arrangement.
With the bulk of the insulating warmth coming from tested and true goose down the Nebula is lighter and packs much smaller than a 100% synthetic quilt of comparable temperature rating. Yet it retains many of the positive aspects of pitting synthetic fill against a harsh mountain environment.
A down quilt is often damp, or even wet, in the morning. It can be heavy dew while sleeping under the stars; mist and spray from nightly rain making it under the tarp; condensation forming on tent walls or in bivy bags. The Nebula's less absorbent, quick drying outer synthetic insulation takes these hits in stride and recover quickly.
During sleep most backpackers release body moisture. When this meets the colder air near a quilt's outer surface it can condense and cause a dramatic loss of down loft. With a hybrid quilt like the Nebula such an event will likely take place in the synthetic layer, to little or no harm.
The stable, continuous coverage APEX provides warmth in places where the down volume might get compressed or shift gradually during the night.
Without a need for a weatherproof outer fabric skin the quilt remains very breathable and quick drying. That said, for absolute extreme conditions we do offer the Nebula with various options for waterproof/breathable shells.
Adding up all the above qualities, the APEX layer may offer even more durable warmth than an isolated gram to gram comparison with down would allude to.
To make the Nebula we retain the features of our Arc UL down quilt, including full box-baffled construction, extensive down control measures, body mapped fill quantities and the cosy neck baffle. Then we add a continuous, non-quilted layer of APEX synthetic insulation to the entire outer surface, but isolated from the down component by a barrier of ultralight fabric.
Stuffed size for a size Long Nebula is an acceptable 14" x 6" (length x diameter)