[WATER OR SAND] Fills with up to 40lbs (16L) / 4.2 gallons of water or sand. Transports easily when empty. Total weight including the base itself is 40lbs (18 kgs) when fully filled. [HEAVY-DUTY HDPE CONSTRUCTION] Fabricated from reinforced HDPE plastic to withstand the elements for years to come. [FROM THE WINDOW TO THE WALL] Great for umbrellas mounted in tables adjacent to walls and windows. Ideal for most umbrellas sized from 6 - 10ft in diameter. [ADJUSTABLE KNOB FOR UNIVERSAL SIZING] Fits umbrellas with poles up to 1.9in (48mm) in diameter. [LIFETIME USA SUPPORT] Whether youre kickin it with a cold one on the patio after a long day, hosting a dinner party or relaxing by the pool; Home Zone Living support is standing by in Atlanta, Georgia to help keep your outdoor space pristine.