Sea To Summit StS Spark -1C Down Sleeping Bag Regular beluga black

The Spark Ultralight Mummy Sleeping Bag Series spans everything from an ultralight down-filled liner, to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and no-frills design to provide cutting-edge performance.
Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate wiggle room for the performance-oriented, backcountry user.
Lining: 10D Nylon
Insulation: Ultra-Dry Goose Down 850+ Loft
Weight: 510g
Temperature rating: +4°C/ -1°C
Body length: 185cm
Sex: men's
Size: 155 x 135 x 102cm
Upper material type: Nylon
Type of insulation: Goose down
Shape: Mummy 850+ FILL Power, RDS-certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
10-Denier Nylon shell and lining. 10-Denier Nylon waterproof-breathable hood and footbox.
Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.
Spark 7C/45F & 1C/30F Primary zip — 1/2 length #5 with zip-plow and two sliders. Spark -9C/15F & -18C/0F Primary zip — 3/4 length #5 with zip-plow and two sliders.
Vertical chest baffles, horizontal baffles lower half and base. SPARK 7C sewn through quilted construction throughout. SPARK -1C/30Fbox wall baffles top half of bag and sewn through quilted construction lower half. SPARK -9C & -18C box wall baffle construction throughout.
Spark 7C, -1C & -9C Standard front draft collar. SPARK -18C Double draft collars
Spark 7 & -1 can't be paired. Spark -9 & -18: Pairs with Women's Sea to Summit bags.
QuiltLock System integrates with StS quilts