Sea to Summit Spark -9C Long Sleeping Bag

The Sea to Summit Spark -9C Long is a premium ultralight down sleeping bag designed for cold-weather adventures. With a comfort rating of -2°C and a limit rating of -9°C, it provides reliable warmth for three-season use and beyond. The bag features 850+ loft RDS certified ULTRA-DRY Down™ for exceptional insulation and water resistance.

Advantages

Ultralight and compressible, the Spark -9C Long uses high-quality down with a fill weight of 430g, ensuring excellent warmth-to-weight ratio. The 10D nylon shell and 7D nylon liner are lightweight yet durable, while the vertical chest baffles and horizontal lower baffles prevent cold spots. The full-length YKK #3 zipper allows easy ventilation and entry.

Suitable for

• Backpacking and thru-hiking where weight and pack size are critical
• Cold-weather camping with temperatures down to -9°C
• Tall sleepers up to 198 cm (78 in) in height

Key specifications

• Temperature Rating (Comfort): -2°C (28°F)
• Temperature Rating (Limit): -9°C (16°F)
• Temperature Rating (Extreme): -27°C (-17°F)
• Fill: 850+ Loft RDS Certified ULTRA-DRY Down™
• Fill Weight: 430 g (15.2 oz)
• Shell Material: 10D Nylon
• Liner Material: 7D Nylon
• Shape: Mummy
• Max User Height: 198 cm (78 in)
• Shoulder Girth: 164 cm (64.5 in)
• Hip Girth: 144 cm (56.7 in)
• Foot Girth: 108 cm (42.5 in)
• Zipper: Full-length YKK #3
• Compressed Volume: 4.3 L
• Included: Ultra-Sil™ compression sack, storage cell

Recommendations

For best performance, store the sleeping bag loosely in the storage cell to maintain loft. Use a sleeping pad with appropriate R-value for your conditions. The Spark -9C Long is an excellent choice for minimalist backpackers who demand high-quality insulation without excess weight.