Highlights
BEST USE: Ultralight Backpacking
PERFORMANCE: Warm Climate
WEIGHT: 13.5oz | 382g
COMPRESSED VOLUME: 2.9L
COMFORT TEMP RATING: 45°F | 7°C
Performance
- Ultralight
- Lightweight
- Midweight
- Ultra Compact
- Compact
- Midsize
- Warm
- Cold
- Extreme Cold
About The Product
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-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.
Product 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
Shipping & Returns
We use climate-neutral shipping:
DHL GoGreen for orders to Germany, Austria and Czech Republic and
GLS Klima Protect for orders to Belgium, Denmark, France, Italy, the Netherlands, Luxembourg, Sweden, Switzerand and Norway.
All orders received by 12:00 noon on weekdays are usually shipped the same day. Orders received later are usually dispatched the following working day.
Delivery time can take up to 3 working days Germany-wide, 4 working days for orders to AT, BE, CZ, DK, FR, IT, LU, NL & SE and 6 working days for orders to CH & NO and depends on the shipping service provider.
Shipping cost:
- Germany, Austria & France: For orders with a value below 75€ we charge a shipping fee of 4,95€. We do not charge shipping fees for orders with a value over 75€.
- Belgium, Netherlands & Luxembourg: We charge a shipping fee of 9,99€ for all orders.
- Czech Republic & Italy: We charge a shipping fee of 14,99€ for all orders.
- Denmark: We charge a shipping fee of 75 DKK for all orders.
- Norway: We charge a shipping fee of 455 NOK for all orders.
- Sweden: We charge a shipping fee of 219 SEK for all orders.
- Switzerland: We charge a shipping fee of 29 CHF for all orders.
All orders can be returned within 14 days of purchase. However, for the sake of the environment, please make sure to keep returns as low as possible.
Find Locally
Sea to Summit tests its sleeping bags for their temperature rating using the ISO 23537 test protocol. This test gives two key ratings: Lower Limit and Comfort Rating.
Lower Limit: The lowest temperature at which a man should stay warm.
Comfort Rating: The lowest temperature at which a woman should stay warm.
Sea to Summit Women’s-specific sleeping bags are listed using the Comfort Rating. Unisex bags are listed using the Lower Rating. For example, if the bag is rated at Lower Limit of 14°F | -10°C and Comfort rating of 27°F | -3°C, it should keep a woman warm down to 27°F | -3°C and a man warm down to 14°F | -10°C, if they are wearing warm clothes and using a good sleeping pad.
Remember: These ratings are just guidelines. Movement, weather, and your gear setup can all affect how warm you actually stay.
Pro Tip: Think of your sleeping bag, pad, and liner as a system. If you expect 28°F | -2°C weather, choose a sleeping bag rated for 23°F | -5°C, use a sleeping pad with an R-Value of 3 or more, and add a liner for extra warmth.

Spark Womens Down Sleeping Bag 7°C / Regular

- 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)
Technical Features

850+ Loft Ultra-Dry Down

Quiltlock System

Responsible Down Standard (RDS)

Free Flow Zip
Tech specs
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Best UseUltralight Backpacking
-
Comes With40D recycled, bluesign APPROVED nylon compression bag
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InsulationRDS certified, 850+ non-PFAS Ultra-Dry Down
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ShapeWomen’s-specific mummy
-
Zip OptionsYKK #5 zippers with snag free zipper plow
7°C Regular | 7°C Long | -1°C Regular | -1°C Long | -9°C Regular | -9°C Long | |
---|---|---|---|---|---|---|
Bag Weight | 13.5oz 382g | 15.2oz 432g | 1lb 4.6oz 584g | 1lb 6.5oz 639g | 2lbs 0.8oz 930g | 2lbs 4.2oz 1027g |
Compressed Volume | 2.9 L2.9 L | 3 L3 L | 4.7 L4.7 L | 5.7 L5.7 L | 8 L8 L | 10 L10 L |
Compression Sack | 3 L3 L | 3 L3 L | 5 L5 L | 8 L8 L | 13 L13 L | 13 L13 L |
Fill Weight | 7.1 oz 200 g | 8.1 oz 230 g | 13.2 oz 375 g | 15.2 oz 430 g | 24.2 oz 685 g | 27.5 oz 780 g |
Fits Up To Height | 5 ft 7 in 170 cm | 6 ft 1 in 185 cm | 5 ft 7 in 170 cm | 6 ft 1 in 185 cm | 5 ft 7 in 170 cm | 6 ft 1 in 185 cm |
Temperature Rating (ISO Lower Limit) | 39°F 4°C | 39°F 4°C | 19°F -7°C | 19°F -7°C | 5°F -15°C | 5°F -15°C |
Women's Temp Rating (ISO Comfort) | 45°F 7°C | 45°F 7°C | 30°F -1°C | 30°F -1°C | 15°F -9°C | 15°F -9°C |