Lightweight yet incredibly versatile, the Spark Pro brings enhanced comfort with the Free Flow Zip System. 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 Spark Pro Free-Flow Zip system ensures maximum ventilation and the flexibility to open the bag flat as a quilt and has a footbox zipper and a short right-side zipper for great ventilation, and means you can sit up with arms extended from the bag.
The Spark Pro is EN rated with a lower comfort limit -1°C for men or 3°C for women. Weighs just 619g and packs up small at 5.3L. Comes with a handy ultrasil compression sack and a larger storage cell. A great choice for adventures where low weight and high performance are priorities.
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Features
- RDS-certified, 950+ fillpower goose down with a non-PFC Ultra-Dry Down treatment for maximum thermal performance
- Featherweight 10D nylon shell with non-PFC DWR, and a highly breathable 10D nylon liner for enhanced comfort
- Technical hood, anatomical footbox and an ergonomic mummy shape - ultralight doesn't have to mean ultratight
- Free-Flow Zip System: YKK #5 side zipper with zipper plow for reliable, snag-free operation. YKK #3 footbox and shoulder zipper for minimal additional weight
- Baffle construction specific for each use: Hybrid box baffles in torso/sewn through in leg area (in -1°C version) or full box baffles for maximum warmth (in -9°C version)
- Front draft collar is fitted around the neck and oversized at the shoulders to retain warmth
- Sea to Summit Guarantee is offered for the Lifetime of this product
Specifications
- Best use: Ultralight Backpacking
- Comes with an 8L Ultra-Sil™ Compression Bag & a Storage Cell
- Insulation: RDS certified, 950+ PFC free Ultra-Dry Down
- Shape: Mummy
- Zip: Free-Flow zipper system
- Weight: 619g
- Compressed volume: 5.3L
- Fill weight: 310g
- Temp rating: EN lower limit -1°C for men or 3°C for women
- Fits up to height 185cm
FAQS
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Can two Spark Pros be zipped together? The Spark Pro is only available with a left zip, but can be zipped to other STS Women's sleeping bags
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Is the Spark Pro available as a women's model? We don't currently offer a women's-specific Spark Pro. The unisex model works for female end-users (who should use the Comfort rating for orientation)
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What's the difference between the Spark and the Spark Pro? The Spark Pro has a footbox zipper and a short right-side zipper (great ventilation, open-flat as a quilt, sit up with arms extended from the bag)