For holding your half parasol, look to this Outsunny fillable umbrella base. Fill it with 18kg of water or 21kg of sand to keep it weighed down.It is engraved with a top pattern for a decorative touch to your outdoors. The metal pole with tightening screws holds your umbrella securely and evenly in place, so the umbrella can provide much-needed shade. Made from tough plastic it's suitable for outdoor use, in plenty of different weather. Features: For half parasol umbrellas: Fits both 3.8 cm and 4.8 cm diameter umbrella poles - space-saving designs you lean against the wall Fillable: Outdoor umbrella stand holds 18 kg of water or 21 kg of sand. Mix sand and then add water to increase the weight. Filling port makes it easy to use and clean HDPE shell: Parasol base is rugged and durable, suitable for outdoor use. Easy to wipe clean. Decorative pattern on the top for a touch of character Steel pole, with tightening knobs: A strong place to keep parasol umbrella in place. Knobs on garden um