The rectangular Kelty Eclipse 35 Sleeping Bag has a soft polyester-cotton liner for the comfort of home even in the outdoors. It has been improved with a hidden pillow pocket, an upgraded shell fabric, and an external storage pocket on the chest. Its luxurious liner, generous elbow room, and cozy CloudLoft insulation pave the way to a good night's sleep.The Eclipse 30 degree double sleeping bag features two layer offset quilt-through construction, differential cut for maximum warmth and loft, zippered draft tube with anti-snag design and a zippered foot vent. By layering two or more sheets of insulation between the liner and shell of the sleeping bag, heat is easily trapped and maintained. To eliminate cold spots, one layer of fill is stitched to the liner, another layer is stitched to the shell, and then the quilt lines are offset so they do not lie on top of one another. Offset quilt construction is durable and maintains its shape and structure after many uses. Storage sack included.