User Friendly and Helium Supported. These party balloons are easier and quicker to inflate. Easy to shape the balloon garland kit as you like. Using a balloon pump can help you speed up the party decoration process. Yellow balloons are compatible with air, helium and water. Birthday balloons with helium will remain afloat for six to eight hours, depending on altitude, humidity, and temperature.Cautions and Precautions. Warning - Choking Hazard - Children Under 8 Children under eight years can choke or suffocate on uninflated or broken balloons. Adult supervision is required. Keep uninflated balloons away from children. Discard broken balloons at once. To avoid bursting, please inflate the balloons slowly and do not overfill. Please avoid sunburn, overheating, or sharp stuff.Premium Quality for Safer Use. Yellow balloons arch kit is made of pure natural rubber latex with a strict manufacturing process. Yellow balloons are safe and non-toxic, suitable for kids and adults to use. Each 12-inch yellow ballon weighs 2.8 g, durable and thick enough, not easy to pop. Birthday balloons can remain a good shape for a long time after inflation.Bang-for-the-buck Balloons 18"+12"+10"+5". This decoration set has 100 pcs matte latex balloons, including 5pcs 18-inch yellow balloons, 30 pcs 12-inch yellow balloons,30 10-inch yellow balloons and 35 pcs 5-inch yellow balloons, enough to make a balloon arch. And we provide a matching color ribbon as a freebie for your party decoration convenience. Combine these 4 sizes of balloons to decorate with a more stratified feeling.Balloons with Richer Application. Balloons arch kit is the best party decoration for all ages, suitable for any occasion. Balloons might witness your growth as gender reveal balloons, happy birthday balloons, baby shower balloons, graduation balloons, wedding balloons, Christmas balloons. Also perfect for anniversaries, Thanksgiving, Christmas, New Year, Mother's Day, Children's Day, Father's Day and Valentine's Day.