Optical O' is based on the popular 'O' series of stemless wine glasses and was designed by Maximilian J. Riedel. With two different sizes, these glasses are perfect for cocktails, mixed drinks and soft drinks alike. It holds just the right amount to savor and swirl at the end of a dinner or in front of a fire. The Spirit of ""O"" comes packed two to a box and is perfect for sharing a nightcap.