This 18" Happy Birthday Cake Slice Clearz Foil Balloon from Anagram International, Inc. is the perfect way to celebrate a special birthday! This eye-catching balloon is designed to look like a cake slice and features bright colors and a fun "Happy Birthday" message. It's made with durable foil material, so it can be reused and refilled with helium. This colorful foil balloon is sure to bring a smile to any birthday celebration. 026635453189.