The Kelty Supernova 20 Sleeping Bag keeps us warm and cozy as the first buds of spring sprout from the ground until the leaves fall from the trees and winter creeps in. The lofty 550-fill down provides consistent, reliable warmth through the shoulder season, and the DWR treatment ensures the down maintains warmth in damp conditions. The bag can be zipped completely open for use as a blanket around the campfire, and the two-way zipper offers ventilation on warmer nights.