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Sea to Summit Spark Down -9°C Sleeping Bag – Ultralight, Maximum Warmth
The Spark Down Sleeping Bag is your ultralight companion for demanding backpacking trips when every gram counts but you don’t want to compromise on restful sleep. With the -9 °C version, you are well-prepared for cool nights during 3-season use.
Ultralight, Warm, and Technically Optimized
Filled with RDS-certified 850+ goose down, PFC-free with Ultra-Dry Down treatment, the Spark keeps you warm even on damp nights. The ultralight 10D nylon outer material with PFC-free DWR coating and breathable inner lining provide maximum comfort, while the hood and footbox protect against wind and condensation.
Perfect Fit and Comfort
Technically designed hood, anatomical footbox, and ergonomic mummy shape ensure warmth without restriction. The full-length zipper can be paired with a matching Spark Women’s sleeping bag, allowing couples to share comfort. Two sliders with a Zip-Plow system prevent zipper snagging.
Temperature
- Comfort Temperature (for women - ISO comfort): -2 °C
- Limit Temperature (ISO lower limit): -9 °C
Features and Highlights
- RDS-certified 850+ goose down, PFC-free (Ultra-Dry Down)
- Ultralight 10D nylon inner lining and DWR-coated outer material
- Technically designed hood and anatomical footbox
- Ergonomic mummy shape for optimal warmth and comfort
- Hollow chamber construction for targeted insulation (-9 °C version)
- Full-length side zipper
Technical Specifications
| Size | Regular | Long |
|---|---|---|
| Weight | 730 g | 786 g |
| Down weight | 480 g | 540 g |
| Compressed volume | 6.8 L | 7.6 L |
| Stuff sack | 13 L | 13 L |
| Maximum user height | 185 cm | 198 cm |
Material
- Outer and lining: 100% Bluesign-certified, RCS recycled nylon
- Down filling: 90/10 goose down, Ultra-Dry, PFC-free
- Stuff sack: 100% nylon, no trims
Included Items
- 1 × Sea to Summit Spark Down -9°C Sleeping Bag
- 1 × Stuff sack
Conclusion: The Spark -9 °C is the ideal choice for ultralight backpacking in cool temperatures. Extremely warm, lightweight, compact, and technically designed for maximum sleep comfort on the trail.
Introduction video for Spark Down Schlafsack
Our family business is dedicated to traveling by bicycle. We want to offer products that help adventurous cyclists explore the world and achieve sporting goals.
Sustainably packaged.
Nature is very important to us. That's why we avoid unnecessary plastic and rely on packaging material made of paper or cardboard. If your package does contain plastic filling material, this is material from our suppliers which we have reused.