Highlights
BEST USE: Light Weight Adventures
PERFORMANCE: Optimal weight Vs warmth
WEIGHT: 619g
Description
The Spark Pro sleeping bag is the perfect option for lightweight adventures that puts comfort at the forefront. With the ability to be adapted to a range of conditions, the Spark Pro is as lightweight as it is ver...
Product Details
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Description
The Spark Pro sleeping bag is the perfect option for lightweight adventures that puts comfort at the forefront. With the ability to be adapted to a range of conditions, the Spark Pro is as lightweight as it is versatile and functional. The optimal warmth to weight ratio makes this bag as comfortable as it is compact and easily packable.
TECHNICAL FEATURES

Our Free-Flow triple-zip design ensures your sleeping bag retains maximum warmth and efficiency when needed and multiple ventilation options when it's not. The half-zip on the right side of the bag (left side on women's bags) provides freedom of movement for both arms, additional ventilation and allows the top third of the bag to be folded down as a mini quilt when the mercury climbs higher than expected.

The QuiltLock system uses the snap locks located at the shoulder and foot end of Sea to Summit sleeping bags plus the quilt footbox / quilt straps to secure a quilt to the sleeping bag. This adds thermal performance and versatility to your sleep system: your integrated quilt now works for ultralight summer adventures and turns your three-season bag into a four-season sleep system.

100% of the down used in our sleeping bags and quilts is independently certified to the Responsible Down Standard (RDS). The RDS certifies down against animal welfare requirements and tracks it from the source to the final product. The purchase of RDS certified products demonstrates demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is certified to the RDS. To learn more about RDS visit

Ultra-Dry Down is a non-PFC treatment hydrophobic treatment applied to the down during down processing. It is not a coating (which would reduce the ability of the down to loft), it comprises of very small particles of a polymer that cause the down clusters / feathers to repel water. Hydrophobic down is not waterproof; but it absorbs less water than untreated down and dries much more quickly.
Ultra-Dry Down does not affect the loft or lifespan of the down, or its breathability. The treatment will last through at least 20 washings.
Tech specs
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Best UseUltralight Backpacking
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Comes WithUltra-Sil compression bag and storage cell
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InsulationUltra-Dry Goose Down 900+ Loft
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Material(s)10-Denier Nylon shell and lining.10-Denier Nylon highly water-resistant-breathable hood and footbox.
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ShapeMummy Fit: Fitted cut with generous footbox and technical hood
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Zip OptionsLeft-side #3 YKK zipper
-1°C Regular | -1°C Long | -9°C Regular | -9°C Long |
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