For campers who don't mind a little chill, the Eureka! Centerfire -10° Sleeping Bag is designed to withstand the cold. Built with a durable cotton-duck shell, lined with cozy yarn-dyed cotton flannel and insulated with Eureka's ThermaShield™, you'll stay warm all night long. Sip 'n Zip design allows for extra mobility when getting a late-night drink or staying up to finish a good book. Simply unzip the abbreviated zipper on the left side. Downwind foot vent can be opened for added ventilation. Removable, integrated carry duffel bag can be stuffed and used as a pillow. Eight-point rivets reinforce durability. Full-length draft tubes. Anti-snag webbing. Internal pocket. External pocket. Hang loops. #8 YKK® zippers. Imported.