With a motorized fan inside the canopy that generates a cooling breeze and silver nylon fabric outside that reflects 90% of harmful UV rays, this umbrella creates a carry-along haven on hot, sunny days. The quiet fan's three 4 1/2" plastic blades rotate at up to 650 RPM to produce a refreshing downdraft, and collapse down along the umbrella's shaft, allowing it to be closed like a typical umbrella. Equally effective against precipitation, the umbrella has a double canopy design with vents that prevent it from inverting in strong wind gusts. A lightweight fiberglass shaft and ribs provide sturdy support and won't rust like metal, and the ABS handle has a ribbed texture for a secure grip and a power switch. Requires six AA batteries that provide 4 hours of operation. The umbrella is 49" diam. when open and 1 3/4" W x 41 3/4" L when closed. (2 lbs.)