- nylon
- 18-degree Fahrenheit (-8-degree Celsius) ultralight down sleeping bag for 2-season backpacking, bike packing, and touring; technical mummy shape features hood and zipper draft tubes
- High-loft 850 fill power down insulation (Responsible Down Standard certified) treated with ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance
- Ultralight, compressible 10D nylon shell with 7D liner fabric for minimal weight and bulk; full-length, left-side YKK zipper
- Broad mummy shape provides adequate room for a natural sleeping position; baffle construction is fine-tuned to the temperature rating and prevents down fill from shifting
- Long size bag has a max user height of six feet six inches; bag weighs 1.6 pounds; compresses to 5.4 liters with included Ultra-Sil compression sack
