These wide - brimmed floppy sun hats are perfect for sunny days. To wear, simply place the hat on your head and adjust it to fit comfortably. They are one - size - fits - all, so they should work for most people. Since the fabric is 100% paper, be careful not to get them wet as it may damage the hat. When not in use, store them in a cool, dry place. If there's a small stain, you can gently wipe it with a dry cloth. Remember, due to California Proposition 65, this product contains chemicals that can be harmful, so handle it with care.