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Sea to Summit Spark Down -1°C Sleeping Bag – Ultralight, Warm, and Super Comfortable
If you care about every gram but still want a restful sleep, the Sea to Summit Spark Down Sleeping Bag is the perfect choice. Filled with RDS-certified goose down (850+ fill power), treated PFC-free with Ultra-Dry Down, it keeps you reliably warm. The technical hood and zipper cover ensure that warmth stays exactly where it’s needed.
Maximum comfort is provided by the super-breathable inner material made of 10-denier nylon, while the durable 10D outer fabric with PFC-free DWR coating, along with the water-repellent hood and footbox, keeps wind and moisture out.
Note about the zipper:
The -1°C comfort version features only a half-length zipper. This means you cannot open the bottom of the sleeping bag for additional ventilation. If full ventilation is important to you, consider the -9°C version, which has a full-length zipper.
Temperature:
- Comfort Temperature (for women - ISO comfort)): 4°C
- Limit Temperature (ISO lower limit): -1 °C
Product Features:
- Ergonomic mummy shape
- Technical hood and anatomical footbox
- YKK zipper with Zip-Plow and dual sliders
- Special hollow chamber construction for varying temperatures
- Coated goose down for optimal water resistance
- Compresses into a 4.5 L stuff sack (Regular) and a 5.1 L stuff sack (Long)
- Zipper: 1/2-length YKK #5 with Zip-Plow and two sliders
Technical Specifications:
| Size | Regular | Long |
|---|---|---|
| Weight | 493 g | 536 g |
| Length | 185 cm | 198 cm |
| Volume | 4.5 L | 5.1 L |
Material:
- Outer fabric: 100% bluesign-certified, RCS recycled nylon
- Inner lining: 100% bluesign-certified, RCS recycled nylon
- Filling: 90/10 goose down (RDS-certified, 850+ fill power, PFC-free / Ultra-Dry treated)
Included Items:
- 1 × Sea to Summit Spark Down -1°C Sleeping Bag
- 1 × Stuff sack
Introduction video for Spark Daunenschlafsack
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.