North Star Sports Sub-Zero Black & Coyote Minus 15 W/Comp Stuff Sack Sleeping Bag -15F (-26C) SURVIVAL RATING: Survival of average adult woman. 0F (-17C) COMFORT LIMIT RATING: Average man can sleep comfortably. 15F (-9C) COMFORT RATING: Average standard woman can sleep comfortably. TRIPLE LAYER CONSTRUCTION: Fully synthetic hydrophobic silicone air core fill material selected for high compression to maximum loft characteristics. More loft equates to a greater thermal barrier. JUMBO ZIPPER - Full length, two-way, self-repairing #10 zipper allows for easy opening from either end with extra-long high visibility reflective pull tag. ADVANCED THERMAL BARRIER - Rip-stop poly shell fabric as first layer of defense, followed by a full-length insulated zipper draft tube, drawstring chest baffle, and adjustable hood closure. OVERSIZED MUMMY - Fits the tall and the small, the hefty and the hungry with an overall size of 86 X 36 X 24 and a large boxed foot area. 5.5lb trail weight.