Sea to Summit Spark SpI 5°c

Sea to Summit's lightest sleeping bag, featuring water-resistant Premium Goose Down. Available in Regular or Large sizes. Both sizes are Left Zip. Show more >
RRP: $287.55
Price excludes VAT for deliveries outside the EU
Only 1 in stock

Sea to Summit Spark SpI 5°c

The Sea to Summit Spark SpI is their lightest sleeping bag. Having minimal features, the Spark SpI is perfect for any ultralight backpacker or alpine expedition. The Ultra-Dry Down Premium Goose Down filling is treated with a durable water-repellent to protect the down from external moisture and internal condensation, an ideal combination that provides the warmth of natural down with added water-resistance in moist environments.

Tech specs

MATERIAL(S)10 D Nylon Shell
INSULATIONRDS 850+ Loft premium goose down
TEMPERATURE RANGE12°c Comfort to -5° Lower Limit
WEIGHTRegular 340g, Large 385g
SHAPEContoured Mummy


Spark SpI 5°c


• Sewn through vertical baffles on chest optimises position of down to prevent it moving during use
• ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture when compared with untreated down
• Sea to Summit sleeping bags dry out 60% faster than bags with untreated down
• 10D nylon shell for minimal weight and bulk
• ½ zip with single slider aids access while keeping weight to a minimum
• Updated sizing provides extra room for both shoulders and hips while still maintaining insulation efficiency
• NOTE: This bag is not designed to pair with another

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