Sea To Summit | Spark 0 Ultralight Down Sleeping Bag 50ºF

ENGINEREED TO KEEP YOU WARM AT THE LIGHTEST WEIGHT AND SMALLEST COMPRESSED SIZE 

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.

Spark Ultralight 50ºF Sleeping Bag makes a great summer sleeping bag or sleeping bag liner!

Features

• ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Goose Down certified Responsible Down Standard (RDS)
• 10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size
• Includes lightweight Ultra-Sil compression bag and storage cell

• Zipper-length trimmed for gram-saving performance:
• 50°F, 40°F, and 28°F have 1/3-length zippers
• 18°F and 5°F have full-length side zippers
• Baffle construction:
• 50°F and 40°F have sewn-through construction
• 28°F has baffles in the torso and sewn through in the leg area
• 18°F and 5°F are fully baffled
• Shape:
• 50°F , 40°F and 28°F - Contoured mummy
• 18°F and 5°F - Broader mummy