STRONG VISUAL AID: This volleyball serve trainer is a powerful visual aid to measure progress and improve accuracy. Easily attach to the antennae to provide more specific targets for your players. Includes 1 Tandem net extender and convenient carry bag REFINE TECHNIQUE: Ideal volleyball training device for practicing volleyball serving, attacking and other techniques above the volleyball net ATTACHES EASILY: Hook-and-loop fasteners easily connect to volleyball net antennae ADJUSTABLE: Durable, stretchable elastic construction adjustable to almost any height QUALITY SPORTS GEAR SINCE 1989: Tandem Sport has been manufacturing and distributing quality volleyball, sports medicine, equipment and training devices to the sporting goods market since 1989