Disney Princess Sleeping Bag and Sackpack Set One slumber sleeping sack bag and sling bag 2 piece set, perfect for on the go! Slumber sack finished size 30" x 54". Slumber Bag Sack Fiber Content: Shell and Llining 100% Polyester. Fiberfill 100% Cotton. Sling bag 100% Polyester. Care Instructions: See sewn in tag.