Sea to Summit Spark Down 0 Degree Ultralight Sleeping Bag, Regular

Name: Sea to Summit Spark Down 0 Degree Ultralight Sleeping Bag, Regular
Brand: Sea to Summit
SKU: STSSDBR0
Price: 549.95 USD
Availability: Discontinued
Rating: 4.3 (3 reviews)

SKU: STSSDBR0

This item is no longer available.

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About Sea to Summit Spark Down 0 Degree Ultralight Sleeping Bag, Regular

FEATURED REVIEWS

Best ultralight sleeping bag!

By Wayne

I love this bag! I purchased it as I am trying to lighten my bikepacking kit and this really helps. It is super light, but almost more importantly, takes up very little space. It is now one I just always toss in the bag because it's so small. At this point, I pretty much only use sea to summit gear for my adventuring needs!

Spark down sleeping bag

By Aaron W.

I plurchased this for a fast thru hike on the Superior Hiking Trail. Nights got down to 40 degrees. I-was a little worried about the chill and the bag rating since I'm a t-shirt underwear and sometimes socks guy. But this was perfect. Finally a bag true to its rating. Yes my tent was small and my pad reflects heat as well. but the bag was warm and comfortable and packs down sooo crazy tiny.

Ultralight Warmth for Cold-Weather Adventures
This Sleeping Bag is engineered for cold-weather backpacking, alpine expeditions, and winter camping, delivering maximum warmth with minimal weight. Designed for gram counters who refuse to compromise on a good night's sleep, this ultralight sleeping bag is filled with RDS-certified 850+ fill power goose down, treated with a non-PFAS Ultra-Dry Down treatment to maintain thermal efficiency in damp conditions. Whether you're braving extreme temperatures or packing light for high-altitude treks, the Spark sleeping bag ensures you stay warm, comfortable, and dry.

Technical Construction for Maximum Comfort
Built for optimal heat retention, the technical hood and zipper draft tube prevent heat loss while maintaining breathability. The super-lightweight 10D nylon liner enhances comfort and airflow, while the 10D shell with non-PFAS DWR treatment offers wind resistance and protection from condensation. A highly water-repellent hood and footbox further shield against moisture, ensuring a warm and dry sleep environment even in challenging conditions.

Versatile Zipper Design and Snag-Free Operation
The YKK #5 zipper features a zipper plough for snag-free operation, enhancing usability and durability. The full-length zipper model can also be paired with an equivalent Women's Spark sleeping bag, allowing couples to zip their bags together for added warmth and shared comfort. The ergonomic mummy shape provides a perfect balance of warmth and space, while the anatomical footbox offers room for natural movement without adding excess weight.

Technical Features

HEIQ Fresh
Sea to Summit Liners are treated with HeiQ Fresh FFL, a biocide-free, highly effective odor control technology that uses a bio-based Amino Sugar Polymer to neutralize body odor.

Thermolite Pro
Thermolite Pro has engineered hollow fibers like standard Thermolite but with the addition of permanent ceramic pigments that absorb the body's infrared rays and reflect them back to the wearer.

Thermolite Eco Made
The recycled Thermolite EcoMade fibers are made from 100% textile waste, are GRS-certified, and offer the same quality and durable lightweight warmth as their polymer virgin counterparts but with a lower carbon footprint.