The Spark Ultralight Mummy Sleeping Bag Series spans everything from an ultralight down-filled liner, to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and no-frills design to provide cutting-edge performance. Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate wiggle room for the performance-oriented, backcountry user.
- Ultra-Dry Down 850+ Loft 90% Down Cluster Premium Goose Down certified Responsible Down Standard (RDS)
- 10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size
- Includes lightweight Ultra-Sil compression bag and storage cell
- Zipper-length trimmed for gram-saving performance
- Baffle construction
- Best use: Ultralight Backpacking
- Comes with: Ultra-Sil™ compression bag and storage cell
- Insulation: Ultra-Dry Down 850+ Loft
- Shell fabric: Ultralight 10D Nylon Shell
- Zip options: Left-side #3 YKK zipper
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