Our 4' Square Umbrella features a clean, sleek appearance without a valance. It is simple to set up for use, durable wood ribs and a center pole. It includes 4 umbrella panels with the total length of 58" rib to rib when set-up. The 1.5" center pole is ideal size for fitting most umbrella post holes in your patio, picnic or bistro table. Our market umbrella design features an extra crown of fabric at the top, which is called a wind vent. This practical design allows for temporary gusts of wind to escape from underneath the umbrella cover. This item is perfect for use at restaurants, cafes, and resorts as well as in personal home outdoor living areas.