The Spark™ Ultralight uses premium materials and a no-frills design to provide cutting-edge performance for its designed end-use.
Spark Ultralight does not mean ultra-tight. The bag is snug, but still has adequate girth for performance-oriented backcountry users.
- Ultra-Dry Down® 850+ loft 90% down cluster premium duck down
- Down certified to the Responsible Down Standard (RDS)
- Fully baffled construction
- Full length left side YKK® #3 zipper
- Lightweight Ultra-Sil™ compression bag and storage cell included
- Manufacturer’s lifetime guarantee
- Shell material: 10D nylon
- Fits up to: 6′ 0″ (regular), 6′ 4″ (long)
- Temperature (EN rating): Comfort range 18ºF to 55ºF
- Women’s temperature (EN rating): 29º comfort
- Compressed volume: 4.9 liters (regular)
- Compression sack: 6 to 2 liters
- Fill weight: 15.2 oz. (regular); 17.1 oz. (long)
- Suggested use: Ultralight backpacking, bike touring










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