If it is slightly deformed, you can use a hair dryer to blow and shape it at low temperature. If the deformation is serious, it will not work. The shape of the baseball cap is fixed, so do not machine wash it. Machine washing will cause the hat to deform.

When hand washing, you should not rub it excessively. You also need to pay attention when drying it. It is best to stuff the hat with crumpled paper and cloth. You can use clothes instead, lay it flat to dry in the shade, and then dry it again to preserve the hat. shape