This Outsunny umbrella base weights are a great accessory to have to keep your parasol, umbrella steady. It comes in 4 piece configuration to be placed on the cross feet of your umbrella. Made from a high-density polyethene material, it can withstand most weather elements. Each of the pieces can be filled with water or sand to make them heavy and more secure, it also has handles on them if you do require them to be moved. This is a great essential to have as part of your umbrella to keep it safe and secure.