The WELCOME ON BOARD wine glass is highly stable thanks to its non-slip base. It is made of TRITAN™. This material is practically unbreakable and with its shine and transparency it will bring elegance to your table as well as remaining secure during meals. The collection of non-slip glasses includes the Wine Glass, Champagne Flute and Water and Beverage glasses, which all match the other accessories in non-slip tableware in high quality melamine with an unmistakable nautical style.