Ventilated double roof for stability and cooling - 2-tier design with multiple vents allows hot air and wind to pass through quickly - Improves umbrella stability in windy conditions - Keeps the shaded area cooler underneath Polyester fabric with durable protection - Made of polyester fabric - Waterproof and resistant to sun and UV light - Durable, colorfast, easy to clean Effortless opening and closing - Crank handle provides a simple open and close system - Quick setup with minimal effort - Designed for easy operation and reliable use Sturdy metal construction for strong support - Powder-coated iron pole - Eight sturdy ribs/struts provide stable support - Resistant to wind and rust for long-lasting performance Use scenarios - Backyard dining: provides reliable shade over a table during family meals on sunny days - Poolside or patio relaxing: offers cool, sheltered seating while enjoying outdoor time - Outdoor dining or cafe patios: suitable for shaded seating areas in windy conditions where stability matters Summary of key attributes - Function: table umbrella with ventilated double roof for stability and cooling - Material: polyester fabric, waterproof, UV resistant, durable and easy to clean - Mechanism: crank handle for quick, effortless setup - Frame: powder-coated iron pole with 8 supporting ribs for wind and rust resistance - Performance: designed to stay stable and shaded in varied outdoor conditions This description stays true to the original product features while presenting clear, customer-focused benefits and practical use cases.