LOL Centerpiece Balloon Inflate with Air 23 Tall. It is automatic self sealing. The size is approximately 23 inch x 16 inch ( 58 cm x 40 cm ) . NO HELIUM REQUIRED. It is good for table decorations. Straw included.WARNING: CHOKING HAZARD - Children under 9 years old can choke or suffocate on uninflated or broken balloons. Adult supervision is required. Keep uninflated balloons from children. Discard broken balloons at once.