To use this cap, simply adjust the strapback to fit your head comfortably. It's great for casual outings, beach days, or any outdoor activity. When it gets dirty, you can machine - wash it in cold water. Use a mild detergent and avoid using bleach as it may damage the recycled cotton material. After washing, reshape the cap and let it air dry. Don't wring it out as this can distort the shape. With proper care, this cap will serve you well for a long time.