The Cobalt Springs is a great choice for any family camping trip. The outer is a durable 190T Polyester that looks as good as it feels. The 100% cotton flannel lining provides an extra soft feel when you are sleeping under the stars in the wilderness or the backyard. The insulation is a hollow fiber that gives you great loft and warmth at the same time. The zipper allows you to zip multiple bags together. A standard stuff sack is included. Features: ·Zipper baffle ·Includes 10.5" x 20" standard stuff sack Specifications: ·Temperature Rating: 25 Degrees Fahrenheit ·Fill Weight: 48 oz. ·Dimensions: 33" x 78" ·Fabric Color: Slate Blue ·Total Weight: 5 lbs. ·Stuff Sack Size: 10.5" x 20" .