KATABATIC GEAR Flex 15°F / -9°C, 900FPKATABATIC GEAR Flex 15F 9C, 900FP is a blanket style sleeping bag with high quality construction, that will truly keep the cold out. The Katabatic attachment system, down filled collar, and draft blocking foot box closure guard you from the cold. The Katabatic Cord Clip attachment system easily latches on to any sleeping pad and offers unmatched flexibility in a quilt style sleeping bag. The elastic binding around the bottom opening prevents drafts at