Ultralight, packable and shaped to fit the way a woman sleeps. Engineered to retain warmth where it’s needed most.

Overview

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 made 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-PFC 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-PFC 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.

Temperature Rating

• Comfort: -1°C
• Temp Rating: -7°C

Weight: 639g

Features

• RDS-certified, 850+ fillpower goose down with a non-PFC Ultra-Dry Down treatment for maximum thermal performance
• Ultralight, breathable 10D nylon liner and a 10D shell with PFC-free DWR keeps the hood and footbox highly water resistant
• YKK #5 zippers with zipper plow provide reliable, snag-free operation
• Women’s specific fit means more narrow at the shoulders (for reduced weight) and wider between the hips and knees to allow for a natural, side-sleeping position
• Technical hood and anatomically-shaped footbox provide excellent warmth retention without the claustrophobic feel of some ultralight bags
• 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)
• Sea to Summit Guarantee is offered for the Lifetime of this product

Technical Specs

• Best Use: Ultralight Backpacking
• Comes with: Ultra-Sil™ Compression Bag & Storage Cell
• Insulation: RDS certified, 850+ PFC free Ultra-Dry Down
• Shape: Mummy
• Zip Options: YKK #5 zippers with snag free zipper plow
• Bag Weight: 639g
• Compressed Volume: 5.7 L
• Compression Sack: 8 L
• Fill Weight: 430 g
• Fits Up to Height: 185 cm
• Temperature Rating (EN Lower Limit): -7°C
• Women’s Temp Rating (EN Comfort): -1°C