Box Rack PackThe Crossover Cords 'Box Rack Pack' is designed so athletes can implement the H. I. I. T protocol by attaching the Crossover Cords to squat racks and or pull up rigs using the Crossover SRS (squat rack system). The stations include four sets of Crossover Cords: light (purple), medium (yellow), heavy (red) and super heavy (blue). These are the most commonly used Crossover Cords and will be sufficient for most athletes, but if the demographic of your