SPARK™ ULTRALIGHT SLEEPING BAG

The Spark™ Ultralight 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 sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.

IS THIS DOWN SLEEPING BAG…?

• Suitable for cooler temperatures? Yes. You would want the Spark 5°F or possibly the 18°F – either bag will work in late Fall, the 5°F will take you down to winter temperatures when paired with an adequately insulating sleeping mat like the Comfort Light Insulated.

• Really suitable as a sleeping bag liner? Yes. You could use the Spark 50°F, or even the Spark 40°F or 28°F to boost the performance of a bag for cold-weather use. Adding one of these to a 20°F / -5°C bag might make more sense than buying a “0°F / -20°C” bag for only occasional winter use.

• Able to be zipped to another sleeping bag? No. Even though the 18°F or 5°F have full-length side zippers, they are not designed to be coupled to a sleeping bag with a right zipper (for instance the Flame 18°F or 5°F).

Read up on the factors which define and affect down quality, and what they mean for you as an end user HERE