WARNING! Children under eight years can choke or suffocate on uniflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once. Made of natural rubber latex, which may cause allergies. Use a pump to blow up the balloon! Balloons are 100% biodegradable and they do not pollute the environment. You can inflate balloons with helium or air. Please retain this information for future reference.