HOLDS UP TO 50 LBS OF SAND: Each square plate is approximately 19.5" W x 19.5" D x 3" H and will hold up to about 33 pounds of water or 50 pounds of sand. When assembled altogether on an umbrella cross base, the entire set of weights takes up 39" square of space. The convenient carrying handle is 4.25" L. From corner to corner, and individual base is 24" L. EASY TO USE: The easy fillable spouts and metal carrying handles on each base make these base plates easy to use and maintain. These base weights are more effective and easier to use than a weighted bag. HEAVY-DUTY BUILD: Each set includes 4 base plates to completely weigh down a cross base umbrella. These weights feature a durable plastic construction that is weatherproof and designed to survive the harsh elements. VERSATILE OPTIONS: These weights can be filled with water or sand, making them extra versatile. The weights can be used outside on the porch, deck, lawn, backyard, or even by the pool to ensure the umbrella won't tip over. WORRY-FREE PURCHASING: Sunnydaze Decor backs its products with a 1-year manufacturer's warranty.