These San Diego Classic Caps are easy to use. Just put them on your head for a stylish look. They're great for daily wear, outdoor activities, or as a gift. When it comes to maintenance, you can spot - clean them with a mild detergent if they get dirty. Remember, due to the California Proposition 65 warning, handle the caps with care as they contain chemicals that may be harmful. Avoid letting small children chew on the caps and always wash your hands after handling them.