Spell it out with our Giant Letter Foil Balloons! Available in both gold and silver. Filled with helium or air these impressive letter shaped balloons will get your message across in an effective and highly visual way! Air filled balloons can be strung up by threading string or ribbon through the eyelets on the letter balloons. For helium filled balloons you will need to purchase helium, balloon ribbon and weights to keep your balloons grounded. Please note that the Hashtag symbol can only be filled with air.