DIY PLANTER BOX: A built-in planter box allows you to fill this base with up to 150-pounds of your choice of greenery, soil, gravel, or sand FITS 7.5-11ft UMBRELLAS: This base features a large coupler to accommodate poles up to 2 inches in diameter, perfect for market umbrellas sized 7.5 to 11ft PREMIUM POWDER COATING: Durable steel panels are treated with a quality powder coating to prevent rust and ensure years of enjoyment MULTIPLE DRAINAGE HOLES: A series of openings in the base allow water to flow freely, promote oxygen circulation, and prevent root rot PORTABLE: A set of built-in wheels allows you to enjoy this planter anywhere in your garden. DISCLAIMER: Do not move planter while filled.