A party essential, these helium quality Royal Blue Latex Balloons inflate to 12 inches high. Fill them with helium for 8 to 10 hours of flying time; fill them with air, and the heavy latex material ensures they’ll remain inflated for days or weeks on end. Seal the balloons by knotting the neck, tying them off with ribbon or string, or using one of our plastic balloon clips. Package contains 100 Blue Latex Balloons. Note: Balloons arrives uninflated. To inflate it with helium please visit your closest Wanna Party store or contact any helium gas provider near you. Filling charges are extra.