Spark Down Sleeping Bag
Spark Down Sleeping Bag
1651 Chemin de l'Industrie
1651 Chemin de l'Industrie
Beloeil QC J3G 6S8
Canada
Sea to Summit Spark Down Sleeping Bag – 30°F / Regular Fits Up To Height 6' 1''
An ultralight down sleeping bag built for users who want minimal weight and compact packability without giving up dependable warmth and comfort on the trail.
Ultralight Backpacking
2 Season
1 lb 1.4 oz / 493 g
4.5 L
The 30°F / Regular variant is listed by Sea to Summit with a lower temperature rating of 30°F / -1°C, a half-zipper configuration, and a Regular size.
It uses RDS-certified 850+ fill power goose down with a non-PFAS Ultra-Dry Down treatment, plus a breathable 10D liner and a 10D shell with non-PFAS DWR and a highly water-repellent hood and footbox fabric.
Product Overview
Sea to Summit describes the Spark as the bag for users who are counting grams but still want a great night’s sleep. For this 30°F model, the bag uses hybrid box baffles in the torso and sewn-through construction in the leg area to balance warmth and weight. :contentReference
The product page also notes an ergonomic mummy shape, technical hood, anatomical footbox, YKK #5 zippers with zipper plough, and a zipper draft tube to help retain warmth.
- RDS-certified 850+ fill power goose down
- Non-PFAS Ultra-Dry Down treatment
- Breathable 10D liner fabric
- 10D shell with non-PFAS DWR
- Highly water-repellent hood and footbox fabric
- Technical hood and anatomical footbox
- YKK #5 zipper with zipper plough for snag-free operation
- Half-zip design for ultralight packability
Ideal Applications
- Ultralight backpacking
- Fast-moving overnight trips
- Compact sleep systems
- 3-season minimalist loadouts in milder cold
- Users prioritizing warmth-to-weight efficiency
Technical Specifications
| Specification | Details |
|---|---|
| Product | Spark Down Sleeping Bag |
| Variant | -1 / 30°F / Regular Fits Up To Height 6' 1'' |
| Best Use | Ultralight Backpacking |
| Performance | 2 Season |
| Weight | 1 lb 1.4 oz / 493 g |
| Compressed Volume | 4.5 L |
| Lower Temp Rating | 30°F / -1°C |
| Zipper Coupling | Half-zipper, cannot be zipped to another sleeping bag |
| Insulation | RDS-certified 850+ fill power goose down with non-PFAS Ultra-Dry Down treatment |
| Shell / Liner | 10D shell with non-PFAS DWR, 10D breathable liner |
| Baffle Construction | Hybrid box baffles in torso, sewn-through in leg area |
| Warranty | Sea to Summit lifetime guarantee |
Why Choose This Model
This version is a strong option for users who want very low carried weight, compact packed volume, and down insulation performance for ultralight missions and fast-moving overnight travel. Its 30°F / -1°C rating and 493 g weight make it one of the lighter serious sleep-system options in the category.
