Specifications:Color: BlackMaterial: PE, PlasticDimensions: 17.5 in. x 17 in. x 15.5 in.Net Weight: 6.5 lbs.Water Capacity: Up to 36 lbs.Sand Capacity: Up to 54 lbs.Water Injection Hole Diameter: 1.5 in.Receiver Sizes: 1.5 in. and 2 in.Compatible Pole Diameter: 1.25 in. and 1.9 in.Tube Length: 9.5 in.Mobility: 4 wheels (2 with brakes)Description:Keep your outdoor umbrella steady and easy to move with this fillable mobile umbrella base, designed for patios, poolside areas, gardens, decks, and backyard seating spaces. Crafted from high-strength PE material, this square umbrella stand is designed for outdoor use and helps resist everyday exposure to changing weather conditions. The fillable design supports up to 36 lbs. of water or 54 lbs. of sand through a side injection opening with a secure sealing cap, helping maintain balance during outdoor use. This mobile umbrella base features four universal wheels for easy movement across outdoor surfaces. Two wheels include locking brakes to help keep the stand in place when positioned. It includes two receivers sized for umbrella poles measuring 1.25 in. and 1.9 in., making it compatible with a wide range of market umbrellas. The screw-in installation design allows for quick setup without additional hardware, while the fillable structure and tightening knob help secure the umbrella pole during use. Note: Actual product color may slightly vary from the images shown due to lighting conditions during photography and individual monitor or device display settings.