The High-Quality 210T Fabric Ensures That The Umbrella Is Excellent In Waterproof And Easy To Dry. There Is Also A Layer Of Uv And Water Blocking Coating On It Which Is Able To Block More Than 99% Uv Rays. Everything Is For Keeping You Cool In The Sun And Dry In The Rain. Strong Shaft And Ribs Are Made Of Fiberglass. More Sturdy Not Easy To Break. Pressing One Button To Automatically Open The Rain Umbrella Smooth And Fast.