- Made of plastic. *Can be filled with water or sand. *Suitable for poles Ø 16–38 mm. *Several bases can be stacked atop one another. *Volume: 8 l. The parasol base can also be used to stabilise party tents. The tent pole can be anchored to the base using a clamping ring. This means guy lines do not need to be tied around the tent. Weighs approx. 8 kg when filled with water, and approx. 16 kg with sand.