Happy Birthday to you! This amazing Thomas Happy Birthday Sing a Tune Foil Balloon will put a smile on the birthday boy for sure! This foil balloon plays ‘Happy Birthday’ with a single tap, with character voices and fun sound effects. The balloon has a guaranteed 50 plays. Match up with our other Thomas the Tank party products. Item Includes: Balloon. Fit and Sizing: 71cm x 71cm/28in x 28in.