Sundercover's Liner - Single Unit

Sundercover UPF50+ Protection Hat Liners
Our UPF50+ Cap and Round  Liners are engineered with the highest quality materials that block over 98% of UVA and UVB rays, providing the best sun protection available. 
Our Innovative cap liners feature lightweight, breathable fabrics that ensure comfort even under the sunniest conditions. For those seeking additional protection for their favorite caps, these liners enhance the sun-blocking capabilities without compromising style or comfort. 
Whether you're hitting the trails, lounging on the beach, or enjoying a casual day out, these hat liners offer supreme protection.
Our Round Liners have an adjustable rim so are OSFM. Our Cap Liners come in OSFM and L/XL. 
4.3 oz Polyester Microfiber Birdseye Flatback Mesh. 
All items are moisture wicking and machine washable. Quick drying.