What do you get when you combine the world's strongest Gustbuster umbrella with sun protection that blocks 96% of the Sun's rays as well as lowers the temperature underneath it by up to 10 degrees?? The one and only Sunbuster Sunblock Umbrella that not only stands up to driving rain and winds up to 55 m.p.h., but makes hot, sunny days a pleasure. The secret is in the special silvery-gray treatment to the canopy of the umbrella that blocks almost all of the Sun's harmful UVA and UVB rays. Regular umbrellas allow many of these rays to penetrate, creating a greenhouse effect underneath. Thats right, a standard umbrella can actually RAISE the temperature underneath it, particulary when there is little or no wind. With a Sunbuster umbrella, you will not only feel cooler, you will BE cooler!