Wenzel Lakeside 40-Degree Rectangular Sleeping Bag (Blue/Light Blue) Filled with 3-pounds non-allergenic insul-therm polyester Polyester outer shell & liner offers durable, long-lasting use Quilt thru construction stabilizes the fill and warmth Insul-therm fill provides comfort down to 40-degrees Self-repairing zipper that allows you to realign zipper teeth