Sea to Summit Spark 5-Degree Ultralight Down Sleeping Bag, Long
- 5-degree Fahrenheit (-15-degree Celsius) ultralight down sleeping bag for 3-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.
- 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.
- compresses to 7.7 liters with included Ultra-Sil compression sack.