These Blue Hollywood California Classic Caps are super easy to use. Just put them on your head and you're ready to go! They're great for protecting you from the sun on a sunny day or adding a stylish touch to your outfit. When it comes to maintenance, you can gently hand - wash them with mild detergent in cold water. Let them air dry. Be careful not to use hot water or put them in the dryer as it may damage the cap's shape. Also, remember the California Proposition 65 warning. Avoid prolonged skin contact with the product to reduce the risk of exposure to harmful chemicals.