Apilco Tradition White Porcelain Mugs, Set of 4. According to Williams Sonoma, these mugs are timeless in design, and are by Apilco, the French company that has supplied culinary professionals with restaurant-quality porcelain wares since 1906. The high-fired porcelain is wonderfully versatile and suitable for everyday dining as well as entertaining. They are a classic design and are easily held. Microwavable as well as oven, freezer and dishwasher safe. Each mug is 3 1/4" high and has a 10-ounce capacity. Made in France.