Designed for late spring to early fall use, the Sea to Summit Spark Ultralight 18F sleeping bag is a lightweight pick for ounce-counting backpackers. It serves up easy ventilation and cozy comfort.
Features
- 850-fill-power down provides cozy warmth
- Baffles in the torso area keep insulation in place; sewn-through construction in the leg area helps keep this bag lightweight
- 10-denier shell and 7-denier liner materials deliver an impressively light weight and compact packed size
- Full-length side zipper with 2 sliders offers easy ventilation options
- Includes lightweight Ultra-Silâ„¢ compression bag and storage cell
Imported.
Technical Specs
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 18 degrees (F) – EN |
| Tested Comfort | 29 degrees (F) – EN |
| Temperature Rating (F) | 18 degrees (F) |
| Temperature Rating (C) | -8 degrees (C) |
| Weight | Regular: 1 lb. 8 oz. Long: 1 lb. 10 oz. |
| Ultralight | Yes |
| Shell | 10-denier nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | Ultra-dry down |
| Fill Weight | Regular: 14.4 oz. Long: 1 lb. 1.6 oz. |
| Lining | 7-denier nylon |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Regular: 72 inches Long: 78 inches |
| Shoulder Girth (in.) | Regular: 61 inches Long: 64 inches |
| Hip Girth (in.) | Regular: 53 inches Long: 56 inches |
| Stuff Sack Size | 6 x 14 inches |
| Stuff Sack Volume | 6 liters |
| Compressed Volume | Regular: 4.6 liters Long: 5.4 liters |
| Gender | Unisex |



























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