Add convenience and stability to your outdoor space with this heavy-duty umbrella base. Even through strong gusts, this wind-resistant base has a sturdy build that keeps your umbrella standing tall. Use it anywhere! It's a perfect way to help shade your deck, poolside, or patio. A refillable reservoir lets you secure your base with sand (120 lbs. fill capacity) or water (38 L fill capacity) as needed, and easy mobility includes four wheels that create a tilt-free surface that is easy to lock and easy to move. Built with a 2-inch receiver to accommodate umbrellas from 6-12 ft in diameter. Two adjustable knobs ensure a perfect fit for most market umbrellas and fit poles 1.5in-1.9in.