Envelope Sleeping Bag Large size lightweight backpacking Cool-Weather Scoop Blue Colour for adults women men polyster Imported 100% Polyester with fill 100% Cotton,Comfort cuff surrounds your face with softness. Oversized cool weather sleeping bag designed for 50 to 70 degree weather. Zip plow prevents zipper snags by plowing fabric away from zipper, roll control locks bag in place for easier rolling. Certified temperature rating independently tested for accuracy, zipper glide tailoring allows smooth zipper operation around corner. Fiber lock prevents insulation from shifting, increasing durability, thermo lock reduces heat loss through zipper.