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The Round Liner is for fitted baseball caps, fedoras, bucket hats, women’s sun hats, etc. and comes in a single OSFM size that can be adjusted to fit different hat sizes.


Machine Washable/Quick Drying

Made in the USA


Applicable tax and shipping will be calculated at checkout.


Fabric: Sundercover hat liners are made from certified UPF 50+ fabric. Black and Magenta: 80% Nylon/20% Spandex or Polyester Microfiber Birdseye Flatback Mesh; White: Polyester Microfiber Birdseye Flatback Mesh

Round Liner

  • * Sundercover cannot guarantee that our liners will fit into every hat.

  • Shipping rates applied at purchase. Orders processed within 1-2 days and estimated shipping time is 3-5 business days, Express shipping option available. Returns accepted within 30 days if not completely satisfied with your purchase. Return shipping only covered on size exchanges.

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