Made of premium chloroprene rubber, these balloons are manufactured to meteorological standards. Small diameter tapered neck for easy inflation. These balloons can be used with pure helium or air/helium mixture (check the telephone directory for your local welding or oxygen supply company for a helium source). Available in six colors (white is not kept in stock but is a special order). We recommend using our 105 ft. pennant (CP363) available in red/white/blue or multi color to display your Giant Balloon. Due to wind, weather and temperature variations, there is no guarantee offered on these inflatables. When ordering, receive a zip tie for multiple uses when you make it a combo kit using our pennants