Kelty Mistral CloudLoft 0-Degree Sleeping Bag 0 F / -18 C Mummy Insulation: Kelty Cloudloft; Shell Material: NR210T nylon double ripstop; Liner Material: P210T polyester taffeta Two-layer offset-quilt construction and extra insulation over the chest Two-way locking blanket zipper Bag can be unzipped and opened flat for use as a blanket