To use this cap, simply adjust the double snapback closure to fit your head. It's one - size - fits - most, so you can easily find a comfortable fit. When wearing it, the pre - curved visor can protect your eyes from the sun. As for maintenance, you can spot - clean the cap with a mild detergent and a soft cloth. Avoid machine - washing to prevent damage to the chenille patch and the braided detailing. Also, don't expose it to direct sunlight for a long time to keep the colors vivid.