The material of the hat is 100% Nylon,the hat can block UVA and UVB rays to help prevent sunburns and long-term skin damage. The tight weave construction offers lasting sun protection against the full spectrum of sunshine. It’s a great hat for camping, hiking, fishing and other times you need to be protected from the sun and elements. Choose from these bold colors and add your organizational or company logo, emblem or message to customize.