Columbia Anytime Hat 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 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 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.