[What You Get] You receive 12 pieces of black hat shaper inserts, perfect for daily use or as replacements. These hat sweat liners are designed to keep your hats in shape and can be shared with family members. If the size doesn't fit, you can easily cut them to your desired dimensions. [Comfortable Material] Made from high-quality felt, these hat shaper inserts are breathable, , and reusable. The material is skin-friendly and effectively absorbs sweat, making it an ideal hat sweat guard for long-term use. You can easily clean and maintain them to your hats stay . [Enhance Your Hat's Shape] Our hat brim shapers are designed to provide excellent support to your hat's crown and brim, ensuring your baseball cap maintains its shape. These baseball cap shapers are perfect for keeping your hats looking stylish and well-formed, no matter how often you wear them. [Suitable for Various Hats] These hat reshapers are widely used, suitable for trucker hats, baseball caps, fedora hats, tennis hats and various ball sports hats with a head circumference of 22-23 inches/55-58 cm, etc. Besides, the baseball cap shaper is especially suitable for maintaining the structure and fit of your favorite baseball caps, making them look as good as new. [Practical Hat Adjuster Insert] The hat filler inserts are moderately thick, making them practical for year-round use. Whether for adults or children, these hat formers for shaping a comfortable fit and a polished appearance.