The MARV Band's unparalleled design supports multiple grips that provide for various unique exercises. Used by athletes in the MLB, NFL and NBA, this product has numerous patents for its design that has been proven to increase muscle activation by 30%. Most notably the band activates muscles around the elbow that help protect the UCL. Because of the handles unique design MARV has has been renowned as a hitting activation / movement prep tool at the highest levels of the game.