This 9' Patio Umbrella is made of a lightweight aluminum frame with a durable powder coat finish. The 8-ribbed aluminum frame is secured to the pole using strong weather resistant PVC materials sure to last for years of enjoyment on your patio or deck. The umbrella features a high grade kevlar mesh cord that won't frey or break unlike cheap umbrellas which use plain rope. This umbrella features an infinite auto tilt mechanism which will tilt after the umbrella is fully opened, simply keep cranking and stop at the desired tilt angle. The canopy consists of 100% solution dyed fabrics which will resist fading and carries a 4-year warranty against fading. We recommend using a 50' base weight for this umbrella under normal wind condition areas and adding the 30' additional base weight for high wind areas.