Simplicity Sewing Pattern 9811 (OS) Childrens Warm & Cool Packs, Cover and Cute elephant, bear and dragon covers hold warm/cold packs. They are perfect for soothing and comforting children. Microwave pack for less than 15 seconds for warmth. Place pack in freezer for cool relief. G, H and I hold 5 packs each and are placed behind the neck, resting on shoulders. Covers can be washed. DO NOT put cover in microwave.