15x9ft Large Double-Sided Rectangular Outdoor Aluminum Twin Patio Market Umbrella w/Crank and Wind Vents

COVER LARGE AREAS: Massive canopy protects your patio, pool, garden, and outdoor dining area with 135sq ft of shade and UV protection! DURABLE DESIGN: This umbrella uses 12 steel ribs to support a large weather-resistant polyester canopy for years of coverage DUAL-PURPOSE WIND VENTS: Designed with 3 dual-purpose wind vents to promote additional cooling and stability as air passes through BUILT-IN CRANK: A convenient hand crank opens and closes the umbrella, while a touch fastener keeps the umbrella's canopy and ribs in place for safe, compact storage