PatioPost 9 Ft 8 Ribs Patio Market Umbrella with Push Button Tilt and UV Resistant Protect Cover, 250gsm, Dark Green Canopy is made of 250g/m2 polyester fabric (thicker than the usual fabric in the market with 180g/m2 or below), waterproof, UV and fade resistant; With dia1.5" aluminium pole; with sturdy steel 8 ribs in rectangular shape 0.5*0.7"; With crank system, easy opening and closing; With tilt function, allows you to adjust your level of shade; With additional umbrella cover, PA coated, same as conopy color, protecting your umbrella when not in use; Note: Umbrella base is not included, additional base is required, suggesting more than 25lbs;