The Smarter Vase is heavier than glass and ceramic because the plastic marble blend has the weight that helps against impact. It is 10" for large, free, and cascading bouquets.  The height of the vase is perfect, the opening is best for medium-sized bouquets, and it isn't too wide as it provides the right amount of support for the stems. As a result, your floral arrangements not only have a longer vase-like, they rarely lose their shape.