Package include -： 2 Pcs Large Shark Balloon 31.5*23.6Inch，2 Pcs Large Whale balloon 31.9*23.62 Inch，2pcs 18inch balloon，2pcs 18inch blue star balloon，1pc 40 inch number balloon Occasions: shark theme birthday party, shark baby shower decorations, shark under the sea party,ocean theme party,cean-themed party，irthday parties, baby showers, and more. Material: made of aluminum foil Inflated : you can use the helium or straw to blow the balloon, pinch flat the mouth of balloon after Inflation, they will be sealing automatically Please do not overfill the metallic mylar balloons and also avoid sunburn，Please avoid sunburn,overheat,pointed object and excessive friction