1pc 28" Green Collapsible Vuvuzela Stadium Horn - Amplify Team Spirit, Compact and Portable. Blow your own 28" stadium horn for your favorite team. If Green is your school or team's color then take our collapsible 28" green vuvuzela horn to the game or event. Our 28" green stadium horn is sold by the piece and collapses to 15" for easy carrying. Please Note: This is not a true horn but will greatly amplify any horn noise your mouth can make. Please order in increments of 1 piece. Important: Please note, the shades of the product color may vary slightly since we might need to use different dye lots on orders of large quantities.