Used once sleeping bag by RAB.  A little too tight for me, rather wide shoulders.  Rated 34F.  Great shape and comes with waterproof bag.  Stored in climate controlled area and not compressed.  Asking $225.00.  New retail was $550.00.  More info at RAB website

Ultra-lightweight with a highly tapered cut, the Mythic 200 is designed for summer, alpine style missions where weight and pack size are crucial to success. Filled with 900FP goose down and covered with a lightweight recycled Atmos™ fabric, it’s a high-performance bag for those meticulously counting grams.

Weight : 18oz / 515g
Rab Sleep Limit : 34°F / 1°C
Packed Size : 13.8 x 9.1in / 31 x 17cm
Ultralight
Packable