Spark Women's Down Sleeping Bag 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. Tech Specs Materials Shell: 100% nylon Lining: 100% nylon Down Fill: 90/10 Goose Down Stuff Sack: 100% nylon - excluding trims Insulation RDS certified, 850+ fillpower goose down with a non-PFC Ultra-Dry Down treatment Specifications by Temp Rating & Size Temp Rating & Size Weight Packed Weight Dimension Packed Size Compressed Volume Length Recommended User Height Fill Weight Temp Rating (ISO Lower) Temp Rating (ISO Comfort) 45°F / Regular 382 g | 13.5 oz 423 g | 14.9 oz 181 x 71 cm | 71 x 28 in 24 x 15 x 10 cm | 9 x 6 x 4 in 2.9 L 181cm | 71in 170 cm | 66.93 in 200 g | 7.05 oz 4 °C | 39 °F 7 °C | 45 °F 45°F / Long 432 g | 15.2 oz 473 g | 16.7 oz 196 x 76 cm | 77 x 30 in 24 x 15 x 10 cm | 9 x 6 x 4 in 3 L 196cm | 77in 185 cm | 72.83 in 230 g | 8.11 oz 4 °C | 39 °F 7 °C | 45 °F 30°F / Regular 584 g | 20.6 oz 641 g | 22.6 oz 181 x 71 cm | 71 x 28 in 29 x 17 x 11 cm | 11 x 7 x 4 in 4.7 L 181cm | 71in 170 cm | 66.93 in 375 g | 13.23 oz -7 °C | 19 °F -1 °C | 30 °F 30°F / Long 639 g | 22.5 oz 696 g | 24.6 oz 196 x 76 cm | 77 x 30 in 34 x 19.5 x 13.5 cm | 13 x 8 x 5 in 5.7 L 196cm | 77in 185 cm | 72.83 in 430 g | 15.17 oz -7 °C | 19 °F -1 °C | 30 °F 15°F / Regular 930 g | 32.8 oz 1008 g | 35.6 oz 181 x 71 cm | 71 x 28 in 41 x 22.5 x 15.5 cm | 16 x 9 x 6 in 8 L 181cm | 71in 170 cm | 66.93 in 685 g | 24.16 oz -15 °C | 5 °F -9 °C | 16 °F 15°F / Long 1027 g | 36.2 oz 1105 g | 39.0 oz 196 x 76 cm | 77 x 30 in 41 x 22.5 x 15.5 cm | 16 x 9 x 6 in 10 L 196cm | 77in 185 cm | 72.83 in 780 g | 27.51 oz -15 °C | 5 °F -9 °C | 16 °F Key Features RDS-certified, 850+ fillpower goose down with a non-PFAS Ultra-Dry Down treatment for maximum thermal performance 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 YKK #5 zippers with zipper plough provide reliable, snag-free operation 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 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) Available Options Temp Rating 45°F 30°F 15°F Size Regular Long