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.

BEST USE: Ultralight Backpacking

PERFORMANCE: 2 Season

WEIGHT: 1lb 1.3oz | 490g

COMPRESSED VOLUME: 2.5 liters