The Big Agnes Fish Hawk sleeping bag offers warmth to 30 degrees and features premium 650 Down insulation. Down has long been the favorite insulation for weight conscious backpackers who also require a small pack size. The Fish Hawk includes the company's popular integrated pad sleeve system which is different than the traditional sleeping bag on top of a sleeping pad. Instead, they unite the two. With Big Agnes, the pad slides into an integrated sleeve on the bottom of the bag, and the top two-thirds of the bag is insulated in the traditional style. When insulation material is compressed under your body, it loses most of its ability to insulate. They eliminate the unnecessary bottom insulation and replace it with a sleeve to accommodate the pad which provides the insulation. Long length requires a 20 in. x 78 in. pad (sold separately). Features:.Long length requires a 20 in. x 78 in. pad (sold separately).Mates to other bags with a 70 in. YKK #8 zippers.Rectangular shape offers more room in foot box and shoulders.No-draft collar seals around neck to keep cold air from sneaking in.No-draft wedge insulates the connection between the bag and pad.No-draft zipper tube insulates along the length of the zipper.Insotect Flow is a flow-optimized insulation system that delivers uniform heat distribution and natural body contouring through its revolutionary baffle design. Conventionally baffled systems heat your body one baffle chamber at a time. Insotect Flow's advanced body-heat management system rapidly transfers heat from the core of your body to your extremities for uniform warmth and comfort. Insotect Flow naturally contours your body to limit excess bulk and allow the insulation to be held closer to your skin..Built in pillow pocket holds a fleece or Big Agnes pillow.Interior fabric loops for sleeping bag liners.Cotton storage sack & nylon stuff sack included.Stuff Bag Size: 8" x 17.5".Compressed Sixe: 7" x 8".Color: Grey/Black.Import..