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.

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

Tech specs

BEST USE: Ultralight Backpacking
PERFORMANCE: 3 Season
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

	15°F REGULAR	15°F LONG	30°F REGULAR	30°F LONG	45°F REGULAR	45°F LONG
BAG WEIGHT	2lbs 0.8oz	2lbs 4.2oz	1lb 4.6oz	1lb 6.5oz	13.5oz	15.2oz
COMPRESSED VOLUME	8 L	10 L	4.7 L	5.7 L	2.9 L	3 L
COMPRESSION SACK	13 L	13 L	5 L	8 L	3 L	3 L
FILL WEIGHT	24.2 oz	27.5 oz	13.2 oz	15.2 oz	7.1 oz	8.1 oz
FITS UP TO HEIGHT	5 ft 7 in	6 ft 1 in	5 ft 7 in	6 ft 1 in	5 ft 7 in	6 ft 1 in
TEMPERATURE RATING (EN LOWER LIMIT)	5°F	5°F	19°F	19°F	39°F	39°F
WOMEN'S TEMP RATING (EN COMFORT)	15°F	15°F	30°F	30°F	45°F	45°F

FAQ

What does 'women's specific' mean?

Narrower shoulders, the widest point at the hips to allow a woman to assume a natural, side-sleeping position, and insulation deployed where women need most warmth.

Can I open a Spark flat for use as a quilt?

No - the ultralight Spark does not have a footbox zipper. For this feature, see the Spark Pro or Ascent sleeping bags

Can two Sparks be zipped together?

Any of the Spark/Women's Spark models with full-length zippers can be zipped together

Spark Women's Down Sleeping Bag

Q & A