Details Sea to Summit Spark -1C/30F Down Sleeping Bag - Regular The Spark -1C sleeping bag is the perfect option for lightweight, two to three season adventures, putting comfort at the forefront but packing down to just 8L to be at home on your bike or in your backpack. The 850+ FILL Power, RDS certified down offers an optimal warmth to weight ratio and makes this bag as comfortable as it is compact and easily packable. Weight: 493 g Technical fitted hood with soft touch adjustment. Extra deep with a front draft collar for a cosy feel. Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight. Box wall baffles at the top half of bag and sewn through quilted construction on the lower half. Primary zip - 1/2 length #5 with zip-plow and two sliders. Single, down-filled, draft tube along the top of all zips Fill weight: 265 g Comfort rating: 4°C | 39°F Lower limit: -1°C | 30°F Materials: Outer: 10-Denier Nylon shell and lining. 10-Denier Nylon waterproof-breathable hood and footbox. Insulation: 850+ FILL Power, RDS certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions Dimensions: Shoulder width 155 cm Hip width: 135cm Foot width: 102cm Length: 185 cm Compressed size: 8L Specifications Spark -1C/30F Down Sleeping Bag