Replacement scoreboard board Material and durability: Made of quality PP material, weatherproof and waterproof for reliable use indoors or outdoors. Number range and color coding: Allows posting numbers from 00 to 99. Yellow indicates players enter the game, and orange indicates players leave the game to limit confusion. Referee equipment enhancement: Adds a clear highlight to the referee's equipment library, improving visibility and organization on game day. Elastic band: quality elastic band with elasticity, good resilience, strong toughness, and durability; designed to withstand longterm use with no breakage. Use scenarios Outdoor field substitutions: Ideal for soccer, rugby, or other field sports where players rotate in and out, helping officials track substitutions quickly and clearly in varying weather conditions. Indoor practice sessions: Useful during training to manage player rotations, track lineup changes, and reduce miscommunication during drills and scrimmages. Tournament officiating: Keeps substitution information organized across multiple games, contributing to a professional and consistent referee equipment kit.