Spark -1C Reg sleeping bag

The Sea To Summit Spark -1C Reg sleeping bag is a minimalist sleeping bag for cool conditions, with excellent-quality down, offering comfort for 3-season use.

It is ideal for hikers or mountaineers seeking an ultra-light, compact, high-performance option with a good warmth-to-weight ratio.

It is the lightest down sleeping bag in this temperature range: it weighs just 493 g!

 

It has 265 g of goose down fill with an outstanding 850 cuin fill power.

 

This down benefits from Ultra-Dry Down treatment, which helps it:

• avoid absorbing moisture;
• retain its natural loft;
• dry more quickly;
• repel microbes and bacteria.

The hydrophobic polymer treatment helps retain 60% more loft in damp conditions and absorb 30% less moisture than a conventional down sleeping bag.

 

This high-performance fill is held in baffles on the upper section, with extra fill distributed at key points to optimise warmth.

The vertical baffles around the torso contain extra fill to provide more warmth in this area. The vertical and horizontal baffle construction prevents the down from shifting and keeps it evenly distributed to avoid cold spots. 

 

The 10D nylon fabric keeps weight and packed size to a minimum.

It is water-repellent and very durable.

The 10D nylon lining gives the sleeping bag excellent breathability.

 

The overall construction is of excellent quality: 

• YKK zip along 1/2 of the bag's length, with an anti-snag feature and insulating draught tube;
• hood easily adjusted with a drawcord and cord lock.

 

Finally, this down sleeping bag comes with 2 bags:

• a lightweight, durable Ultra Sil compression sack
• a storage sack to keep the down in optimal condition

 

Other features:

• 10D nylon lining and outer fabric
• 265 g Ultra-Dry Down 850+Loft fill, 90/10 goose down.
• Zip YKK