The boxes on the back of rugby shirts serve different purposes depending on the type of box. Here are the different types of boxes and their purposes:
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GPS tracking device: The box on the back of rugby shirts is a GPS tracking device. The device is inserted into a pocket at the top of the back of the shirt. The data collected by the device can help players and coaches analyze performance, monitor fitness levels, and prevent injuries.
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Padded area: Some rugby shirts have little padded areas between the shoulder blades. These padded areas are not boxes, but they may be what the question is referring to. The purpose of these pads is to provide extra protection to the players spine and neck during tackles.
In summary, the boxes on the back of rugby shirts are GPS tracking devices that collect data to help players and coaches analyze performance, monitor fitness levels, and prevent injuries. Some rugby shirts also have padded areas between the shoulder blades to provide extra protection to the player's spine and neck during tackles.
