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 for the designed end-use.

Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user

Highlights

Best Use

Ultralight Backpacking, Bike Touring, Liner Bag

Performance

Summer or Sleeping Bag Liner: 50°F (comfort range 50°F to 70°F)
Warm weather: 40°F (comfort range 40° to 60°F)
2 Season: 28°F (comfort range 28°F to 60°F)
2.5 Season: 18°F (comfort range 18°F to 55°F)
3.5 Season: 5°F (comfort range 5°F to 50°F)

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.

BEST USE: Ultralight Backpacking
COMES WITH: Ultra-Sil™ compression bag and storage cell
INSULATION: Ultra-Dry Down 850+ Loft
SHAPE: Mummy
SHELL FABRIC: Ultralight 10D Nylon Shell
ZIP OPTIONS: Left-side #3 YKK zipper

Size:

Specifications :

Description

Best Use

Performance