A party essential, Royal Blue Latex Balloons inflate to 11 inches in diameter. Filled with helium, they remain aloft for up to 18 hours. Filled with air, they last for several days. Package contains 15 blue latex balloons. Royal Blue Latex Balloons product details: - Fill with helium or air - 11in diameter when inflated - Up to 18 hours of float time - 15 balloon per package WARNING: CHOKING HAZARD - Children under 8 years can choke or suffocate on uninflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once. NOTE: Balloons Arrive Uninflated.