Mmm! This Letter M Gold Megaloon Foil Balloon is sure to make your guests go ‘Mmm’. Add a couple more letters from our foil balloon range to spell out the name of the birthday boy or girl or a message for a special occasion. The letter measures 100cm and can be filled with air or helium. Item Includes: Balloon. Fit and Sizing: 100cm / 41in in height. Fabrics and Care: Foil. Please note: Self sealing balloon, can be filled with air or helium.