Engineered to keep you warm at the lightest weight and smallest compressed size+ View tech specs
BEST USE: Ultralight Backpacking
PERFORMANCE: Warm Weather
WEIGHT: 12oz | 340g
COMPRESSED VOLUME: 1.5 liters
LOWER TEMP RATING: 40ºF | 5ºC
The Spark Ultralight Mummy Sleeping Bag Series spans everything from an ultralight down-filled liner, to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and no-frills design to provide cutting-edge performance.
Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate wiggle room for the performance-oriented, backcountry user.
Zipper-length trimmed for gram-saving performance:
|40°F Regular||40°F Long||28°F Regular||28°F Long||18°F Regular||18°F Long||5°F Regular||5°F Long||Liner Regular||Liner Long|
|Bag Series||Spark 1Spark 1||Spark 1Spark 1||Spark 2Spark 2||Spark 2Spark 2||Spark 3Spark 3||Spark 3Spark 3||Spark 4Spark 4||Spark 4Spark 4||Spark 0Spark 0||Spark 0Spark 0|
|Bag Weight||12oz 340g||13.6oz 385g||1lb 1.3oz 490g||1lb 3.8oz 560g||1lb 7.5oz 665g||1lb 10.3oz 745g||1lb 15oz 880g||2lbs 2.7oz 985g||7.9oz 225g||9.2oz 260g|
|Compressed Vol (ASTM Standard)||1.5 L1.5 L||2.2 L2.2 L||2.5 L2.5 L||3.5 L3.5 L||4.6 L4.6 L||5.4 L5.4 L||6.6 L6.6 L||7.7 L7.7 L||.9 L.9 L||1.3 L1.3 L|
|Compression Sack||XXXS - 2.5L to 1LXXXS - 2.5L to 1L||XXXS - 2.5L to 1LXXXS - 2.5L to 1L||XXS - 3.3L to 1.3LXXS - 3.3L to 1.3L||XXS - 3.3L to 1.3LXXS - 3.3L to 1.3L||XS - 6L to 2LXS - 6L to 2L||XS - 6L to 2LXS - 6L to 2L||S - 10L to 3.3LS - 10L to 3.3L||S - 10L to 3.3LS - 10L to 3.3L||Stuff SackStuff Sack||Stuff SackStuff Sack|
|Fill Weight||6.3oz 180g||7.2oz 205g||10.6oz 300g||12.2oz 345g||15.2oz 430g||17.1oz 485g||21.9 oz 620g||24.7oz 700g||3.5oz 100g||4.1oz 115g|
|Fits Up To Height||6 ft 183 cm||6 ft 6 in 198 cm||6 ft 183 cm||6 ft 6 in 198 cm||6 ft 183 cm||6 ft 6 in 198 cm||6 ft 183 cm||6 ft 6 in 198 cm||6 ft 183 cm||6 ft 6 in 198 cm|
|Season Rating||Warm WeatherWarm Weather||Warm WeatherWarm Weather||2 Season2 Season||2 Season2 Season||2.5 Season2.5 Season||2.5 Season2.5 Season||3.5 Season3.5 Season||3.5 Season3.5 Season||Summer or Sleeping Bag LinerSummer or Sleeping Bag Liner||Summer or Sleeping Bag LinerSummer or Sleeping Bag Liner|
|Temperature Rating (EN Comfort / Lower Limit)||40ºF 5ºC||40ºF 5ºC||28ºF -3ºC||28ºF -3ºC||18ºF -8ºC||18ºF -8ºC||5ºF -15ºC||5ºF -15ºC||50ºF 10ºC||50ºF 10ºC|
|Women's Temp Rating (EN Comfort)||48ºF 9ºC||44ºF 7ºC||38ºF 4ºC||38ºF 4ºC||29ºF -2ºC||29ºF -2ºC||18ºF -8ºC||18ºF -8ºC||54ºF 13ºC||54ºF 13ºC|
This sleeping bag is great for cool-weather camping and travel, especially the 5°F or 18°F models for late fall temps. For colder winter conditions, try pairing our Spark 5°F with a 3.5 R-Value sleeping pad or higher, like the Comfort Light Insulated.
Yes. You could use the Spark 50°F, or even the Spark 40°F to boost the performance of a bag for cold-weather use. Adding one of these to a 20°F bag might make more sense than buying a 0°F bag for occasional winter use.
No, this sleeping back does not join with another. Even though the 18°F or 5°F have full-length side zippers, they're not designed to be coupled.