Lightweight yet incredibly versatile, the Spark Pro brings enhanced comfort with the Free Flow Zip System
+ View tech specsThe Spark Pro has been optimized for comfort, versatility and light weight. Our highest-lofting down - 950+ fillpower RDS-certified goose down with a non-PFAS 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.
-1°C Regular | -1°C Long | -9°C Regular | -9°C Long | |
---|---|---|---|---|
Bag Weight | 619g | 672g | 784g | 861g |
Compressed Volume | 5.3 L | 5.5 L | 7.0 L | 7.9 L |
Compression Sack | 8 L | 8 L | 13 L | 13 L |
Fill Weight | 310 g | 356 g | 480 g | 550 g |
Fits Up To Height | 185 cm | 198 cm | 185 cm | 198 cm |
Temperature Rating (ISO Lower Limit) | -1°C | -1°C | -9°C | -9°C |
Women's Temp Rating (ISO Comfort) | 3°C | 3°C | -3°C | -3°C |
The Spark Pro is only available with a left zip, but can be zipped to other STS Women's sleeping bags
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)
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)