[Function and Use] This product is designed for cleaning and storing hats. It can be placed in a washing machine or dishwasher to clean hats without causing deformation. It helps protect hats during daily use and travel, providing reliable protection against damage. (Black) [Keep the Hat in Shape] The innovative design features a 10cm gap on both sides of the peak, effectively maintaining the hat's shape and curvature. The adjustable button size fits various flat-top and roll-top hats. These design elements help preserve the hat's original shape and appearance. [Reinforced Structure] The six-button construction offers enhanced structural support, ensuring the product maintains its form and stability during cleaning and storage. [High-Quality Materials] Made from durable, flexible, and environmentally friendly plastic materials that help maintain hat shape and extend hat lifespan.