Sea to Summit Spark Down Sleeping Bag −1°C
6 or 12 months Interest Free with Gem Visa*
$250 minimum purchase. Minimum monthly payments required. Lending criteria, T&Cs & fees apply.
Terms & fees
Includes a $55 establishment fee and $65 annual fee ($32.50 half-yearly). Standard interest rate (currently 29.49% p.a.) applies after the Interest Free term ends. *Paying only the minimum monthly repayment of 3% of the outstanding monthly balance or $20 (whichever is more) may not be sufficient to repay the purchase amount(s) during the Interest Free term. Further information on rates and fees is available at gemfinance.co.nz. Credit provided by Latitude Financial Services Limited.
A compact down sleeping bag for tramping and bikepacking when every gram matters. The Spark −1°C uses 850+ fill power goose down and a close-fitting mummy shape to keep your pack light.
Choose your size
| Specification | Regular | Long |
|---|---|---|
| Recommended user height | 185 cm | 198 cm |
| Bag weight | 493 g | 536 g |
| Packed weight | 558 g | 601 g |
| Down fill weight | 265 g | 305 g |
| Compressed volume | 4.5 L | 5.1 L |
| Bag length | 196 cm | 211 cm |
| Packed dimensions | 34 × 19.5 × 13.5 cm | 34 × 19.5 × 13.5 cm |
Choose by your height. The stated bag length is the overall length, not the recommended sleeper height. Manufacturer weights are average figures.
Temperature ratings in Celsius
- ISO comfort: 4°C
- ISO lower limit: −1°C
The −1°C model name refers to the lower-limit rating. Comfort is the more useful starting point if you sleep cold. Lower limit describes a warmer sleeper curled up to retain heat; it is not a comfort guarantee. Allow a margin for your conditions and use an insulated sleeping mat.
Zip and construction
- RDS-certified 850+ fill power goose down with water-resistant Ultra-Dry Down treatment.
- Breathable 10D nylon shell and liner, with extra water resistance at the hood and footbox.
- Box-wall baffles in the torso and sewn-through construction in the lower section balance warmth and weight.
- Half-length side zip with two sliders for ventilation. The footbox stays closed; this model does not open flat as a quilt.
What’s included
- Sea to Summit Spark Down Sleeping Bag −1°C
- Carry sack
- Storage cell
Compare Spark options
Standard Spark prioritises low weight. Spark Pro adds a footbox and shoulder zip for more ventilation and opens flat. Women’s Spark has a different fit and uses the comfort rating in its model name.
| Model | Comfort / limit | Regular / Long |
|---|---|---|
|
7°C Half-length side zip |
11°C / 7°C | 363 g / 387 g |
|
−1°C (this model) Half-length side zip |
4°C / −1°C | 493 g / 536 g |
|
−9°C Full-length side zip |
−2°C / −9°C | 730 g / 786 g |
|
−18°C Full-length side zip |
−10°C / −18°C | 1113 g / 1204 g |
Compare this temperature with: Spark Pro · Women’s Spark
