The Little Mermaid Centerpiece Balloon is a perfect addition to any party or event. This balloon is approximately 20 inches tall and 18 inches wide, making it a great centerpiece for tables. It is automatic self-sealing, so no need for helium. The package includes a straw for easy inflation. Please note that this balloon is a choking hazard and adult supervision is required, especially for children under 9 years old. Ensure uninflated balloons are kept away from children and discard broken balloons immediately.