Keep your shade secure with the YLLN 40 lbs. Square Patio Umbrella Base. Built with a solid cement core and galvanized iron exterior, this base resists cracking, leaking, and rust for lasting outdoor use. Measuring 17.75 in. D x 17.75 in. W x 5.00 in. H with a 17.00 in. tube height, it fits umbrella poles of 1.57 in. and 1.77 in. The design replaces traditional knobs with easy plastic retainers for quick setup. It also features 4 universal wheels with locking function, making movement effortless while ensuring stability when parked. Perfect for patios, gardens, poolside, or cafes, this heavy-duty base blends strength with convenience. Perfect for patios, terraces, gardens, poolside, and cafe settings, the YLLN umbrella base combines industrial strength with modern design to keep your shade steady and stylish in any environment. Color: Teak. Material: Wood.