Betallic 36178P Woodland Birthday Party Holographic Balloon Pack, 18" This foil balloon would be perfect for any party or celebration that you might have Balloons will stay inflated (with Helium) for up to 1 week! Mix and Match with Latex and Foil Balloons to create fun, festive balloon bouquets as easy party decorations that make a major impact! Highly durable This product is easy to use and highly durable Manufactured in USA