The Sea to Summit 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 for the designed end-use. Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.
- Ultra-Dry Down 850+ Loft 90% Down Cluster Premium Goose Down
- 10D shell and 7D liner materials
- Includes lightweight Ultra-Sil compression bag and storage cell
Note: Water is used for size comparison. It is not included.