Spark Down Sleeping Bag 0°F to 45°F Ultralight Mummy Bag

Counting grams, but still counting on a good night's sleep? The Spark is worth a look.

RDS-certified 850+ fillpower goose down carries a non-PFAS Ultra-Dry Down treatment, and the bag pairs a technical hood with a zipper draft tube to hold warmth in. A super-breathable 10 Denier liner handles comfort, while the 10D shell with non-PFAS DWR and a highly water repellent hood and footbox fabric deal with wind and condensation.

Full-length zipper versions can be zipped to a matching Women's Spark, so couples get the comfort of one shared bag.

Features

• RDS-certified 850+ fillpower goose down with a non-PFAS Ultra-Dry Down treatment for maximum thermal performance
• Ultralight, breathable 10D nylon liner and a 10D shell with non-PFAS DWR keep the hood and footbox highly water resistant
• Technical hood, anatomical footbox and an ergonomic mummy shape, because ultralight doesn't have to mean ultratight
• YKK #5 zippers with a zipper plough for reliable, snag-free operation
• Baffle construction matched to each use: sewn through for lighter weight (7°C|45°F), hybrid box baffles in the torso with sewn-through legs (-1°C | 30°F), or full box baffles for maximum warmth (-9°C | 15°F)
  
• Zipper length chosen per use: half-length (7°C|45°F and -1°C | 30°F) for ultralight packability; full-length side zip (-9°C | 15°F and -18°C | 0°F)
• Sea to Summit Guarantee offered for the lifetime of this product