Sea to Summit Spark Women's -1C Down Sleeping Bag Long pewter grey

Three-season performance in a women's-specific mummy bag built around premium 850+ fillpower down.

The Sea to Summit Spark Women's -1°C Down Sleeping Bag is designed for female backpackers and outdoor professionals who need thermal efficiency in a compact, packable form. The women's-specific cut — narrower at the shoulders, wider between the hips and knees — accommodates a natural side-sleeping position. RDS-certified 850+ fillpower goose down with non-PFC Ultra-Dry Down treatment maintains insulation performance in damp conditions.

Features

• RDS-certified 850+ fillpower goose down with non-PFC Ultra-Dry Down treatment for moisture resistance

• Women's-specific fit: narrower shoulders, wider hip-to-knee section for side sleeping

• 10D nylon shell with PFC-free DWR; highly water-resistant hood and footbox fabric

• Ultralight, breathable 10D nylon liner

• Technical hood and anatomically shaped footbox for warmth retention without restriction

• YKK #5 zippers with zipper plow for snag-free operation; compatible zip with Unisex Spark bags

Technical Specifications

• Temperature rating: Comfort -1°C / Limit -7°C

• Insulation: RDS-certified 850+ fillpower goose down, non-PFC Ultra-Dry Down

• Shell: 10D Nylon with PFC-free DWR

• Lining: 10D Nylon

• Shape: Mummy

• Fit: Women's Long (body length up to 185 cm)

• Shoulder circumference: 152 cm | Hip: 142 cm | Foot: 102 cm

• Weight: 0.639 kg