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Sea to Summit Spark SpII Down Sleeping Bag (-2C)

Sea to Summit Spark SpII Down Sleeping Bag (-2C)
$549.00 - $579.00
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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 for the designed end-use.

Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.

Weight: 490g / 17oz (regular size)
Fill: 850+ Fill Power Ultra Dry RDS Goose Down
Fill Weight: 300g / 10.6oz

ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Goose Down certified Responsible Down Standard (RDS)

10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size

Includes lightweight Ultra-Sil™ compression bag and storage cell

Zipper-length trimmed for gram-saving performance

Baffled in the torso and sewn through in the leg area.

Recommended Use

Ultralight Backpacking


Late Spring/Summer/Early Fall

Temperature Rating


Comfort Limit


Lower Limit




Insulation Type

850+ Fill Power Ultra Dry


RDS Goose Down

Bag Weight

Regular: 490g / 17oz


Long: 560g / 20oz

Fill Weight

Regular: 300g / 10.6oz


Long: 345g / 12.2oz

Fits to User Height

Regular: 183cm / 6ft


Long: 192cm / 6’4”

Girth – Shoulder

Regular: 147cm / 58”


Long: 152cm / 60”

Girth - Hip

Regular: 126cm / 50”


Long: 132cm / 52”

Girth - Foot

Regular: 88cm / 35”


Long: 94cm / 38”

Stuff Sack Size

13 x 25cm / 5 x 10”

Compressed Volume

Regular – 2.5L


Long – 3.5L

Fabric – Shell

Ultralight 10D Nylon Shell

Fabric – Lining


Comes With

Ultra-Sil Compression Sack


Storage Cell


Sea to Summit Spark Series Sleeping Bags

Part Numbers

Option UPC MPN Store SKU
Regular 9327868094981 S2121 SLE608251610
Long 9327868094998 S2122 SLE611631430