15.5 oz mug, packaged in a printed open-faced acetate box, is made from new bone china and includes one pair of matching socks made from a cotton, polyester, and Spandex blend that fits US women's size 4-9 and US men's size 5-8. Machine wash socks on a gentle cycle with cold water. To best preserve decals, washing the mug by hand is recommended. Dishwasher safe. Microwave safe.