Hat Shaper for Improved Hat Structure: Designed to maintain the shape and curve of your baseball cap or trucker hat, these inserts prevent your hats from drooping or collapsing. They act as both shapers and stiffeners, enhancing the hat's appearance and . Breathable & Felt Material: Crafted from premium soft felt, these hat liners offer exceptional sweat absorption and breathability. They are skin-friendly, ensuring comfort during prolonged use. Their and tear- nature makes them easy to wash and suitable for daily reuse. Universal Compatibility with Various Hat Types: These inserts are versatile and suitable for a wide range of hats including baseball hats, fedora hats, golf caps, and trucker caps. Customizable Fit for Enhanced Comfort: Each liner measures approximately 10.3x3.9inches and can be trimmed to fit your hat perfectly. This customization allows for a snug, seamless fit, ensuring maximum comfort and effectiveness in sweat absorption in various hat types. 20PCS Value Pack in Two Colors: The package includes 20 reusable cap sweat liners, split evenly with 10 in black and 10 in white. This variety allows for frequent replacement and daily wear, ensuring your hats always stay and in perfect shape.