Sea to Summit Spark Ultralight -9°C Sleeping Bag Features_Twist Lock you'll have ample room for

you'll have ample room for a full week of continuous travel

AirZone cutout space

keeps your brow dry with the TransAction™ headband

The map shows the walk trail and camp sites set in a full sized topographic map

Sea to Summit Spark Ultralight -9°C Sleeping Bag Features_Twist Lock you'll have ample room forIf you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you. Filled with RDS certified 850+ fillpower goose down treated with a non PFC Ultra Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super breathable 10 denier liner fabric, while a 10D shell with a non PFC DWR plus a highly water repellent hood and footbox fabric shed