To use these Optic X - Gym posters and prints, simply find a suitable spot on your gym wall and hang them up. Make sure the area is clean and dry before hanging. As for maintenance, avoid exposing them to direct sunlight for long periods as it may fade the colors. Also, keep them away from moisture to prevent damage. If they get dirty, you can gently wipe them with a dry cloth. That's all you need to do to keep these posters and prints looking great in your gym.