Sea to Summit Spark -9C Down Sleeping Bag Regular beluga black

Ultralight cold-weather performance for backcountry users operating in demanding conditions.

The Sea to Summit Spark -9°C is a mummy-cut sleeping bag built around 850+ fill power RDS-certified goose down with Ultra-Dry water-resistant treatment. Box wall baffle construction throughout retains loft and eliminates cold spots, while the fitted mummy shape with a generous footbox and technical hood maximises thermal efficiency. Rated to a -2°C comfort / -9°C limit, and sized for body lengths up to 185 cm.

Features

• 850+ fill power RDS-certified goose down with Ultra-Dry water-resistant treatment

• 10-denier nylon shell and lining; waterproof-breathable hood and footbox

• Box wall baffle construction for consistent loft retention and no cold spots

• 3/4-length #5 zip with zip-plow and dual sliders for ventilation control

• Standard front draft collar to seal in warmth

• QuiltLock system integrates with Sea to Summit quilts; compatible with Women's Sea to Summit bags

Technical Specifications

• Temperature rating: -2°C comfort / -9°C limit

• Insulation: Ultra-Dry Goose Down, 850+ fill power

• Shell and lining: 10D Nylon

• Shape: Mummy

• Body length: up to 185 cm

• Weight: 730 g