Product Overview: Take on Mother Nature with our Double Canopy Umbrella. Come wind, rain, or just plain old sunshine, it’s ready for battle with a SUNBLOK® undercoating, lightning-resistant shaft and a double-canopy that vents wind to prevent inversion. It’s practically invincible. Features: 68" diameter SUNBLOK™ underside coating Blocks 96% of harmful UNA/UBV rays Reduces temp by 10 degrees Patented wind pressure release cord prevents tearing Lightning-resistant double fiberglass shaft 190-threadcount nylon canopy Water and bleed-proof