Katabatic Gear Blackwelder Quilt
$415 free shipping conus estimated retail over $530

24.5 oz down fill

Pertex Endurance Ripstop 1.3oz/yd
We use Pertex Endurance on our Blackwelder 0°F for increased weather protection. Pertex Endurance features an ultralight membrane with a durable nylon face. This membrane provides increased protection from external moisture while remaining highly breathable, even at low temperatures.

I picked this up on the gear swap.

The previous owner wrote:
Gear: Blackwelder 0* quilt
Size: Regular (6')
Misc.: 2oz overfill, stuff sack, retention system cord and storage bag
Condition: 100% as new! never used and stored correctly

"Katabatic just discontinued this and replaced it with the Grenadier (5F). This is warmer and slightly heavier. It's REALLY warm. Like -15F warm. A Phenomenally good sleeping bag"