-Create a sturdy foundation for any of our 10-foot cantilever patio umbrellas with two to four of these heavy-duty polystone weight bases. Featuring a geometric design in classic black, these semicircular bases fit together to create a half- or full-circle cantilever umbrella base. Avoid messy sand weights or paver blocks and opt for the clean, safe and stylish anchor provided by these durable 30-pound bases. Material: Fabric , Color:Black. Also could be used for outdoor,furniture,outdoor furniture,patio,patio furniture,cantilever umbrella collection,deck,polystone,weighted,umbrella collection. By Cost Plus World Market.10008238