The Sea To Summit Spark IV sleeping bag is ultralight, technical, and designed to keep you as warm as possible with minimal packed weight and size. The Spark series can span everything from an ultralight liner to a hard-alpine or adventure racing bag, to an expedition-weight midwinter bag.
The Spark IV's temperature rating per EN13537 standards is:
- Comfort: -8°C | 18°F
- Lower Limit: -15°C | 5°F
- Extreme: -36°C | -33°F
Features
- Expedition mummy design for extra space when wearing layered clothing
- RDS 850+ Loft ULTRA-DRY Down for superior insulating power, moisture resistance and compressibility
- 10D Nylon shell and 7D lining fabrics
- Vertical chest baffles prevent down migration and cold spots
- Full zip with two sliders to aid access and provide ventilation options
- Zipper, hood and collar draft tube prevents heat loss
- Includes storage cell and lightweight Ultra-Sil compression bag for compact storage.
Specs:
|
5°F REGULAR |
5°F LONG |
|
|
BAG SERIES |
Spark 4 |
Spark 4 |
|
BAG WEIGHT |
1lb 15oz / 880g |
2lbs 2.7oz / 985g |
|
COMPRESSED VOLUME (ASTM STD) |
6.6 L |
7.7 L |
|
COMPRESSION SACK |
S - 10L to 3.3L |
S - 10L to 3.3L |
|
FILL WEIGHT |
21.9 oz / 620g |
24.7oz / 700g |
|
FITS UP TO |
6 ft / 183 cm |
6 ft 4 in / 192 cm |
|
SEASON RATING |
3.5 Season |
3.5 Season |
|
TEMPERATURE (EN RATING) |
5°F / -15°C (Lower Limit) |
5°F / -15°C (Lower Limit) |
|
WOMEN'S TEMP (EN RATING) |
18ºF (Comfort) |
18ºF (Comfort) |