LIVOOSUN patio offset umbrella is more versatile than a regular market umbrella: there is no pole in the center that might block your view, allowing you to enjoy a larger area of unobserved shade. The canopy is made of UPF50+ polyester fabric, supported by 8 powder steel umbrella ribs, ensuring firmness and rustproof while providing you with smooth-touch and superior appearance. Dimensions: The base is NOT INCLUDED. We recommend using the matching umbrella base. You can search for it using the code: 39709876 or 43564568 in the navigation bar.