Mountain Trails Allegheny 25-Degree Sleeping Bag, Black "S" Quilt constructions keeps insulation in place 2-Way fully separating main zipper for venting Can be opened and used as a blanket or zipped to another Allegheny to form a doublewide Elastic roll straps for storage and transport Filled with 5 lbs. Of non-allergenic Insul-Therm insulation