The Omni-Wick feature of the Columbia women"s Anytime Hat complements the Omni-Shade feature by eliminating any moisture build-up due to excess sweating by offering quick evaporation. * The Omni-Shade UPF 30 sun protection has been certified by the Skin Cancer Foundation as a highly effective method of sun protection. * The stylish embroidered leaf design on the side of the hat gives it an attractive and unique appeal that sets it apart from other basic hats. * The 100% polyester fabric makes the hat fit comfortable no matter how you want to wear it and stretches to your needs without being overly constrictive.