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King size 36" x 80" bag snuggles you in a soft, 100% cotton flannel liner with a durable 100% polyester outer cover to keep you warm down to 20°F. Filled with 5 lbs. of Hollofil 808 fill to trap heat and hold it in. Easy to pack--Wrap’n’Roll saves time, just roll into attached carrier, tie and transport.Coleman ComfortSmart--Guaranteed to Keep You WarmZipplow moves fabric away from zipper to prevent snagsThermolock reduces heat loss through zipperFiberlo