ADVANCED TECHNOLOGY: Columbia's PFG Mesh Snap Back Ballcap features signature Omni-Shade protection that blocks UVA and UVB rays to help prevent sunburn and long-term skin damage. HANDY FEATURES: This everyday mesh cap is equipped with ventilated back for long-standing comfort while outside. MATERIAL: A ballcap crafted of quality stretch mesh means ultimate comfort anytime, anywhere. FIT: This mesh ball cap features an adjustable snap back for comfort. Columbia's Men's Mesh Ballcap is an embodiment of style and comfort designed to withstand long days out doors.