8ft. Giant Chloroprene Balloon {EZ504}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 (EZ363) available in red