His aluminum foil balloon will stay floating for weeks when inflated only with helium. Shipped un inflated. You can easy to inflate using the straw or an air handheld pump. This is a number balloon price and you will receive 1 number balloon you want. This party balloon decoration can be used repeatedly,no extra knot, self-sealing valve, convenient inflation and deflation. This foil balloon suits for a wedding, christening, anniversary, engagement, birthday, baby shower, Halloween or Christmas event. Great for all romantic occasions. No party is complete without balloons. The classic party balloon decorations are for any age and any themed party. Beautiful and Safety: All the mylar balloons in our shop are made of premium quality foil, which is safe to be used around children, and inflating with a pump is strongly recommended.