This Vintage Fire King Mug Frog Hildi Stacking is a charming and nostalgic piece of American-made glassware from the 1960s. The round mug features a playful cartoon frog pattern in white and green colors, perfect for all occasions. With a capacity of 8-10 oz and made of glossy milk glass, this mid-century modern mug is both microwave and dishwasher safe. It is a unique addition to any collection of decorative cookware and serveware, blending retro style with practical functionality. The Fire King brand is known for its quality and this vintage mug is no exception.