Spark Women's Down Sleeping Bag –1°C

Sea to Summit’s Spark –1°C Down Sleeping Bag for Women strikes the perfect balance of minimal weight and thermal performance. Featuring RDS-certified 850+ fillpower Ultra-Dry Down, a technical hood and anatomically shaped footbox, all wrapped in ultralight 10D nylon shell and liner with non-PFAS DWR on hood and footbox, this women’s-specific mummy bag keeps you comfortable down to –1°C (30°F).

Spark –1°C Down Sleeping Bag – Women’s Features

• RDS-Certified 850+ Fillpower Goose Down: Ultra-Dry Down treatment for maximum loft and moisture resistance.
• 10D Nylon Shell & Liner: Ultralight, breathable fabrics with non-PFAS DWR on hood and footbox.
• Technical Hood & Footbox: Shaped to seal in warmth without bulk or claustrophobia.
• YKK #5 Zippers with Draft Tube: Snag-free operation and heat retention along the zipper.
• Women’s-Specific Mummy Shape: Narrower shoulders and wider hips/knees for optimal side-sleeping comfort.
• Hybrid Baffles: Box baffles in torso and sewn-through baffles in legs to optimize warmth-to-weight at –1°C.
• Sea to Summit Guarantee: Lifetime product support for lasting adventures.

Spark –1°C Down Sleeping Bag – Women’s Specifications

• Comfort Temperature: 30 °F (–1 °C).
• Weight: 639 g (1 lb 6.5 oz).
• Compressed Volume: 5.7 L.
• Fill Power: 850+ goose down.
• Shell & Liner Fabric: 10D nylon with non-PFAS DWR treatment.
• Shape: Women’s-specific mummy.
• Zipper: YKK #5 with draft tube.
• Comes With: 40D recycled, bluesign® approved nylon compression bag.
• Best Use: Ultralight Backpacking.
• Size Options: Regular (User height 170cm), Long (User height 185cm)