The cap features a dark DryZone under-visor, where the dark color helps reduce glare and minimize reflections that fall onto you eyes and sunglasses. A moisture-wicking sweatband adds comfort, and a mesh-lined front panel enhances ventilation. It comes with an adjustable, elasticated neckband with a Velcro closure. The main fabric is Supplex performance material made from 80% nylon and 20% polyester. Provides UPF 50 sun protection, blocking 97.5–98% of UV radiation. One size fits all.