Happy 21st Birthday Balloon Decoration Kit Ready to party with this deluxe complete set Huge Numbers 21 decorate a big wall no helium or with helium float high and mighty Balloons are Numbers 2 and 1 are size 34 inches 16 Pack of 11 inches latex Balloons - 8 Hot Pink & 8 Black. Balloons will arrive flat. Also receive 2 of the 21 gold and black 18 inch Mylar Balloons and custom designed for Amazon the silver party international 11 inch latex balloons