
Highlights
Second Summit: Lets give gear a second chance. Shop our expertly inspected, pre-owned gear delivered to you in like new condition and protected by the Sea to Summit Guarantee.
Best Use: Ultralight Backpacking
Performance: 3 Season
Weight: 1lb 11.7oz | 784g
Compressed Volume: 7L
Lower Temp Rating: 15°F | -9°C
About The Product
The Spark Pro has been optimized for comfort, versatility and light weight. Our highest-lofting down - 950+ fillpower RDS-certified goose down with a non-PFC Ultra-Dry Down treatment - is wrapped in extremely breathable 10D fabrics. The Free-Flow Zip system ensures maximum ventilation and the flexibility to open the bag flat as a quilt. Zip a Spark Pro to a Women's Spark and share the comfort with your companion.
Product Features
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Spark Pro Down Sleeping Bag (15°F & 30°F) (Like New) 15°F / Regular

The Spark Pro has been optimized for comfort, versatility and light weight. Our highest-lofting down - 950+ fillpower RDS-certified goose down with a non-PFC Ultra-Dry Down treatment - is wrapped in extremely breathable 10D fabrics. The Free-Flow Zip system ensures maximum ventilation and the flexibility to open the bag flat as a quilt. Zip a Spark Pro to a Women's Spark and share the comfort with your companion.
Tech specs
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Best UseUltralight Backpacking
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Comes WithUltra-Sil™ Compression Bag & Storage Cell
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InsulationRDS certified, 950+ PFC free Ultra-Dry Down
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ShapeMummy
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Zip OptionsFree-Flow zipper system
15°F Regular | 15°F Long | 30°F Long | 30°F Regular | |
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Bag Weight | 1lb 11.7oz 784g | 1lb 14.4oz 861g | 1lb 7.7oz 672g | 1lb 5.8oz 619g |
Fill Weight | 16.9 oz 480 g | 19.4 oz 550 g | 12.6 oz 356 g | 10.9 oz 310 g |
Compressed Volume | 7.0 L7.0 L | 7.9 L7.9 L | 5.5 L5.5 L | 5.3 L5.3 L |
Compression Sack | 13 L13 L | 13 L13 L | 8 L8 L | 8 L8 L |
Temperature Rating (ISO Lower Limit) | 15°F -9°C | 15°F -9°C | -30°F -1°C | -30°F -1°C |
Women's Temp Rating (ISO Comfort) | 27°F -3°C | 27°F -3°C | 37°F 3°C | 37°F 3°C |
Fits Up To Height | 6 ft 1 in 185 cm | 6 ft 6 in 198 cm | 6 ft 6 in 198 cm | 6 ft 1 in 185 cm |
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