Blue & Silver Flag Banner - 21st

This eye-catching "21st Birthday" flag banner is a fantastic way to mark such a milestone celebration. Measuring 2.74 metres (9 feet) in length, it features a series of light blue pennants adorned with confetti patterns and a prominent, holographic "21" that shimmers and catches the light. The combination of the classic blue theme with the sparkling silver details creates a fun, celebratory look that feels both festive and sophisticated. It’s an easy, high-impact decoration that will definitely stand out and help create a great atmosphere for the birthday event.