To use this bookmark, simply place the plastic flap over the top of the page where you want to mark your spot. When you're done reading, gently remove it from the book. Keep it away from sharp objects to avoid scratching the die - cast crest. To clean, use a soft, dry cloth. Don't expose it to water or high humidity for a long time as it might damage the enamel on the crest. Store it in its original box when not in use to protect it.