The Spark I is the lightest and most compact sleeping bag we make. It's an excellent summer bag whether you're ultra-light through hiking or cycle touring. It also works well as a booster bag, slipping inside another sleeping bag to add warmth. .
- Shell: 10D UL Nylon treated with DWR
- Liner: 15D nylon soft touch, high density weave
- 850+ loft Ultra-Dry Down (90/10 European goose down)850+ loft Ultra-Dry Down (90/10 European goose down)
- 1/3 length #3 YKK zipperf
- Sew-through transverse baffle construction
- Shell: 10D UL Nylon treated with DWR
- Liner: 15D nylon soft touch, high density weave
- 850+ loft Ultra-Dry Down (90/10 European goose down)850+ loft Ultra-Dry Down (90/10 European goose down)
- 1/3 length #3 YKK zipperf
- Sew-through transverse baffle construction