The Happy O Set adds a modern, playful touch to the table with four tumblers featuring azure-blue, purple, cinnabar red, and orange bases. The subtle color is confined to the base, preserving the appearance of the beverage while adding vibrant character. Part of RIEDEL The O Wine Tumbler series introduced in 2004, these machine-made crystal glasses are dishwasher safe, durable, and ideal for parties, picnics, or everyday use. Set of four.