CAUTION: Please avoid contact in case of latex allergy as products are made of natural rubber latex!Popped latex balloons are a chocking hazard to children under 8 years.Please supervise energetic and playful pets from accidentally popping balloons. Generally, 12-inch latex balloons filled with helium will float between 6-10 hours. Balloons filled with air will stay inflated between 8-10 hours outdoors and 12-20 hours indoors.You will receive a pack of 36 metallic 12 inch red balloons with 65 yards of curling ribbon. Avoid placing balloons near sources of heat and direct sunlight. Helium is sensitive to temperature. For outdoor displays, under-inflate the balloon by first over-inflating the balloons then releasing gas so the balloon can easily expand later. In preparation for a party, test only one balloon the day before to monitor heat, humidity, or rain in your environment.