SUPPORT THE ECO-SYSTEM: By providing water for bees, you can help create a supported eco-system by giving the insects which are so vital to our world a helping hand along the way. VERSATILE: Once filled with water, you can provide relief to butterflies, bees and other small insects throughout the warmer periods of the year. SPECS: You will receive 80x marbles and 1x bowl. The product measures 7.87 x 7.87 x 4.72 inches (20 x 20 x 12 cm). The bowl is made of ceramic and the marbles are made of glass.