Libbey Glass 5092 - Beer Glass, Mug 16 Oz., Clear, 12 Pack As America's Glassmaker since 1818, Libbey Foodservice knows the vital role glassware plays in your business. Libbey is renowned as the leading producer of glassware products in the Western Hemisphere, including stemware, beer, spirits and barware glasses. More than vessels for beverage service, the right glass enhances presentation to elevate value and helps you control portions to maximize profitability.