Which item is mandatory for players to wear as part of their equipment?

Shin guards are mandated equipment for all players competing in soccer according to the Laws of the Game established by FIFA. They are designed to protect the lower legs from injuries during play, particularly from kicks and accidental collisions. Regulations stipulate that shin guards must be made of suitable materials and provide adequate protection.

Other items mentioned, such as headbands, custom jerseys, and sunglasses, are not recognized as mandatory by the rules of the game. While players often wear jerseys and may choose to wear headbands for personal or team preferences, these items do not have the same safety consideration that shin guards do. Similarly, sunglasses are not allowed during play due to concerns over safety and visibility. Thus, shin guards are the only mandated piece of equipment for players, emphasizing their importance in maintaining player safety on the field.