A lightweight, compact sleeping bag for 3 seasons, the Sea to Summit Spark Ultralight 5F features a full-length zipper with 2 sliders to provide extra ventilation when the weather warms up.
Features
Functional for 3 seasons of use; hardy adventurers may even push the limits into early or mid-winter
850-fill-power down provides cozy warmth
Fully baffled construction keeps insulation in place
10-denier shell and 7-denier liner materials deliver an impressively light weight and compact packed size
Full-length side zipper with 2 sliders offers easy ventilation options
Includes lightweight Ultra-Sil™ compression bag and storage cell