Looking for a fun way to spell out a birthday message or display your guest of honor’s name or initials? Just add this “A” Silver Mylar Letter Balloon to your giant letter balloons bouquet! Find our full mylar balloon alphabet and number selection online to gather all the letters and numbers you need to make your well wishes extra memorable. Our letter balloon party supplies are the perfect decoration for a birthday party, graduation, anniversary or other milestone event. Shop even more foil letter balloons on our site. Mylar. 34"