The Universal Arm Wave Arm Sleeve is one of the most innovative Arm Sleeves (Armband) on the market. The Arm Wave Arm Sleeve with a Zipper under the underarm part of the Arm Sleeve can connect to any other Arm Wave Zip banner, Zip Wing or Zip Flag Piece in stock. The universal Zip Armband (Arm Sleeve) is used and recognized as the official cheering instrument for all sports fans (Soccer fans, football supporters, basketball fans, track and field fans, cricket supporters, baseball fans and all sports enthusiast). The Arm Wave cheering accessory flag can be customized to promote brands logo, country flags, sports clubs, leagues and sports teams like (MLS Soccer teams, Champions League teams, UEFA English league teams, Spanish league teams, World Cup soccer teams, Olympics country teams, NBA Teams, NFL teams, NCAA College teams and more).