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Sundercover® hat liners come in 2 shapes and 3 sizes!


 The Round Liner is for fitted baseball caps, fedoras, bucket hats, women’s sun hats, etc. With it's adjustable rim, it comes in a single One Size Fits Most (OSFM).



The Cap Liner is shaped for adjustable baseball caps with an exposed opening in the back. (This liner can be used in other hats, although it’s sun protection will be limited to the area covered by the liner). This hat liner is available in the following 3 sizes:


One Size Fits Most (OSFM)- This liner fits in most adult OSFM hats. Approximately  21”- 24” head circumference. 


Large/Extra Large (L/XL)- This liner fits in larger-sized men’s hats. Approximately 23"-25" head circumference.

Toddler/Youth (T/Y)- This size fits best in women’s small, toddler and youth hats. Approximately 18”-21” head circumference.

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