What will it be? If you’re having a party to reveal the sex of your baby, then this Gender Reveal Supershape Foil Balloon is just what you need! The balloon is double-sided, one side in pink and the other, yes you guessed it…in blue! Check out our other Gender Reveal party range too! Item Includes: Balloon. Fit and Sizing: 71cm x 45cm/28in x 18in. Please Note: Requires helium to float but can also be air-filled.