Sea to Summit Spark Down Sleeping Bag RDS

If you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you. Filled with RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 denier liner fabric, while a 10D shell with a non-PFAS DWR plus a highly water repellent hood and footbox fabric shed wind and condensation. The full-length zipper model can be zipped to an equivalent Women's Spark for comfort that couples can share 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 keeps the hood and footbox highly water resistant Technical hood, anatomical footbox and an ergonomic mummy shape - ultralight doesn't have to mean ultratight YKK #5 zippers with zipper plough provide reliable, snag-free operation 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) 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 45°F Regular 45°F Long 30°F Regular 30°F Long 15°F Regular 15°F Long 15°F Double 0°F Regular 0°F Long Weight 12.8 oz 13.7 oz 17.4 oz 18.9 oz 25.7 oz 27.7 oz 54.4 oz 39.3 oz 42.5 oz Fill Weight 5.29 oz 6.07 oz 9.35 oz 10.76 oz 16.93 oz 19.05 oz 34.74 oz 29.63 oz 33.33 oz Compressed Volume 2 L 2.9 L 4.5 L 5.1 L 6.8 L 7.6 L 14.3 L 9.9 L 10.6 L Temperature Rating (ISO Lower) 45 °F 45 °F 30 °F 30 °F 16 °F 16 °F 16 °F 0 °F 0 °F Women's Temperature Rating (ISO Comfort) 52 °F 52 °F 39 °F 39 °F 28 °F 28 °F 28 °F 14 °F 14 °F Recommended User Height 72.83 in 77.95 in 72.83 in 77.95 in 72.83 in 77.95 in 77.95 in 72.83 in 77.95 in