Sea to Summit Spark Pro Ultralight Sleeping Bag (-1°C)

The Sea to Summit Spark Pro Ultralight Sleeping Bag keeps things light while dialling up the comfort. Its standout warmth-to-weight ratio means serious performance in a compact, packable build. Adaptable and trail-ready, it’s made for pushing further without carrying extra bulk.

Details: 
- 900+ FILL Power, RDS-certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
- Featuring 10-Denier Nylon shell and lining fabric, these lightweight fabrics offer breathability, protection and effective temperature regulation for premium comfort in the outdoors.
- 10D Nylon's highly water-resistant and breathable features offer added protection and prevents exposure to tent wall condensation.
- Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.
- Free Flow Zip System: Primary zip - full length #5 with zip-plow and two sliders. Secondary zip - 1/4 length #3 with zip-plow and two sliders. Footbox zip - #3 with two sliders.
- Spark Pro -1 Vertical chest baffles, horizontal baffles lower half and base, box wall baffles top half of bag and sewn through quilted construction lower half. Spark Pro -9 Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout.
- Fitted front draft collar: scalloped over the neck and oversized at the shoulders.
- Technical fitted hood with soft touch adjustment. Extra deep for cosy like feel.
- Pairs with Women's Sea to Summit bags.
- QuiltLock System integrates with STS quilts

Technical Specifications: 
- Best Use
Ultralight Backpacking
- Comes With
Ultra-Sil compression bag and storage cell
- Insulation
Ultra-Dry Goose Down 900+ Loft
- Material(s)
10-Denier Nylon shell and lining.10-Denier Nylon highly water-resistant-breathable hood and footbox.
- Shape
Mummy Fit: Fitted cut with generous footbox and technical hood
- Zip Options
Left-side #3 YKK zipper

Regular
- Bag Weight
619g
- Compression Sack 
XS - 8L
- Fill Weight
310g
- Fits up to Height
185 cm
- Season Rating
2 Season
- Temperature Rating (En Lower Limit)
-1ºC

Long
- Bag Weight
672g
- Compression Sack 
XS - 8L
- Fill Weight
365g
- Fits up to Height
198 cm
- Season Rating
2 Season
- Temperature Rating (En Lower Limit)
-1ºC