AAA Playground’s Black 16-inch Diameter Umbrella Stand Filled with Concrete maintains the upright display of your shade provider and keeps a patio assembly intact and connected. The solid black coloring and simple lines of the base provide just enough visual appeal to be neither distracting nor off-putting, accentuating your space’s style and not taking away from it. Built for durability, the concrete filling will help the umbrella stand up to the toughest winds, eliminating inconveniences that come from a toppled over umbrella. There is a tightening knob to lock the umbrella’s base in place which adds to the security of the unit. This unit is compatible with the various Market and Patio umbrellas from AAA Playground’s . Help keep your guests happy and avoid unwanted accidents and messes from happening as a result of an unsecured umbrella and protect guests against the weather, rain or sunshine.