DetailsPlenty of room for two, thoughtfully designed for 3-season comfort. The KSB Double™ features a 650 fill power down top and synthetic fill bottom provides exceptional warmth-to-weight ratio. The bag's versatility is made possible by its individual draft covers, hood snap, and two-way zippers running along each side. The hood snap creates two individual hoods to stop the draft between partners and provide warmth in temperatures down to 30°F. The full zippers make it possible to partially or completely remove the top quilt on warm nights under the stars.