Ultralight Weight. Premium Warmth. Tailored for Women.
Turn down your pack weight, not your comfort. The Women's Spark Ultralight 7 Down Sleeping Bag features a female-specific mummy profile engineered for maximum thermal efficiency and minimal bulk on fast-and-light summer adventures. By pairing elite 850+ loft goose down with a featherweight 10D nylon shell, this bag compresses down to an astonishingly small 3 liters while maintaining just the right amount of wiggle room for a restful night's sleep in the backcountry.
Key Features
🏃♀️ Women’s-Specific Mummy Fit
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Engineered for Her: Mirroring female anatomy, this bag is wider at the hips and narrower at the shoulders to eliminate cold spots and maximize heat retention.
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Anatomical Footbox & Hood: A fitted, extra-deep technical hood and generous footbox maximize thermal efficiency without making you feel constricted.
🔥 Premium Down & Weather Resistance
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850+ Fill Power Goose Down: Filled with top-tier, RDS-certified goose down for an incredible warmth-to-weight ratio.
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ULTRA-DRY Down™ Treatment: A nano-level water-repellent polymer treatment protects the down from external moisture and internal condensation, allowing it to retain 60% more loft and dry 60% faster than untreated down.
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Eco-Friendly Shell: The bluesign®-approved 10D nylon shell and lining offer premium breathability, while a PFC-free DWR finish keeps the hood and footbox highly water-resistant.
🛠️ Smart Technical Details
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No-Snag Zipper: A half-length #5 zipper features an anti-snag zip plow and two sliders for easy ventilation.
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Targeted Baffling: Vertical chest baffles prevent down from shifting during the night, while sewn-through horizontal baffles in the lower half keep weight to an absolute minimum.
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QuiltLock System: Built-in drawcords allow you to securely anchor a Sea to Summit quilt directly to your sleeping bag for versatile, layered warmth.
Sizing & Specifications
Temperature Rating (ISO 23537-1:2022)
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Comfort (Women's): 7°C
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Lower Limit (Men's): 4°C
Materials & Sustainability
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Insulation: 850+ Loft, Responsible Down Standard (RDS) certified Goose Down with ULTRA-DRY treatment.
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Shell & Lining: 10D Recycled Nylon with a non-PFC DWR (Durable Water Repellent) finish.
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Included Accessories: Comes complete with a premium Ultra-Sil compression bag for the trail and a breathable mesh storage cell for long-term care at home.
