Built for women who want minimal weight but maximum comfort in their adventures, the Women's Spark lineup demonstrates Sea to Summit's 100% commitment to building a sleeping bag that's perfect for you. Women's specific shape and body mapping result in warmth and comfort without the weight. RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment provides superior insulation, while a technical hood and zipper draft tube prevent precious warmth from escaping. A super-breathable 10D liner fabric rounds off the comfort profile, and a 10D shell with a non-PFAS DWR combined with a highly water repellent hood and footbox fabric keep moisture out Couples can zip the full-length zipper Women's Spark to an equivalent Unisex Spark for extra comfort and thermal efficiency

Design:

• Shaped to fit the way a woman sleeps and engineered to retain warmth where female sleepers need it most, the ultralight 2024 Women's Spark offers serious upgrades in comfort and performance
• Uses a full-box baffle construction to accommodate extra down and reduce cold spots
• Expedition mummy bag sizing provides extra space for layered clothing or extra wiggle room
• Vertical baffles in the chest optimize the position of down to prevent it from moving during use
• Full side zipper with 2 sliders provides easy access and extra ventilation options
• Women's specific fit: narrower at the shoulders (for reduced weight) and wider between the hips and knees to allow for a natural, side-sleeping position
• Zipper draft tube, hood, and front neck draft collar all prevent warmth being lost when needed most
• Ultralight, breathable 10D nylon liner and a 10D shell with non-PFAS DWR provide comfort and shed moisture. Hood and footbox have a highly water resistant, breathable fabric for extra moisture protection
• Baffle construction specific for each use: Sewn through for lighter weight (7°C|45°F), Hybrid box baffles in torso/sewn through in leg area (-1°C|30°F) or full box baffles for maximum warmth (-9°C|15°F)
• Technical hood and anatomically-shaped footbox provide excellent warmth retention without the claustrophobic feel of some ultralight bags
• Contoured mummy shape for comfort and efficient insulation
• YKK #5 zippers with zipper plough provide reliable, snag-free operation

Technology:

• RDS-certified, 850+ fillpower goose down with a non-PFAS Ultra-Dry Down treatment for maximum thermal performance

Additional Details:

• Recommended Max User Height: 6’