Shopping security
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.
| 5°F REGULAR | 5°F LONG | LINER REGULAR | LINER LONG | |
|---|---|---|---|---|
| BAG SERIES | Spark 4 | Spark 4 | Spark 0 | Spark 0 |
| BAG WEIGHT | 1lb 15oz | 2lbs 2.7oz | 7.9oz | 9.2oz |
| COMPRESSED VOL (ASTM STANDARD) | 6.6 L | 7.7 L | .9 L | 1.3 L |
| COMPRESSION SACK | S - 10L to 3.3L | S - 10L to 3.3L | Stuff Sack | Stuff Sack |
| FILL WEIGHT | 21.9 oz | 24.7oz | 3.5oz | 4.1oz |
| FITS UP TO HEIGHT | 6 ft | 6 ft 6 in | 6 ft | 6 ft 6 in |
| SEASON RATING | 3.5 Season | 3.5 Season | Summer or Sleeping Bag Liner | Summer or Sleeping Bag Liner |
| TEMPERATURE RATING (EN LOWER LIMIT) | 5ºF | 5ºF | 50ºF | 50ºF |
| WOMEN'S TEMP RATING (EN COMFORT) | 18ºF | 18ºF | 54ºF | 54ºF |
Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order
/eh/2025-01-08/173633966714069467/picture.png)
/eh/2024-12-24/173503345348979036/Favorite-Icon.png){kind=icon}
/eh/2025-07-08/1751962110204480194/picture.png)
/eh/2025-06-21/1750485478958537574/countryInfoIcon.png)
/eh/2025-06-21/1750485741321434291/Hi-Sign-in-My-Nihao.png)
/eh/2025-06-21/1750485837193896318/cart.png)
/eh/2025-06-21/1750485968202533847/cart.png)
/eh/2025-04-17/1744862476612819675/hot-img.png)
/eh/2025-11-07/1762504524550532584/header-icon.jpg){kind=icon}
/eh/2025-07-07/1751875582852206790/header-icon.png){kind=icon}
/eh/2025-07-07/1751875587886277738/header-icon.png){kind=icon}
