These LA Classic Khaki Caps are super easy to use. Just place the cap on your head and adjust it to fit comfortably. When it comes to care, you can gently hand - wash the caps in cold water with mild detergent. Hang them to dry. Avoid using harsh chemicals or machine - drying as this may damage the cap's material. Also, keep in mind the California Proposition 65 warning. The chemicals in the product can be harmful, so don't ingest or put the cap in direct contact with food or drink.