4-PIECE SET: Set includes (2) 13-1/2-inch tumblers with solid glaze, each with a lid. This set can be paired with Corelle's other spectacular solid and reactive glaze stoneware for a stylish and elegant table setting.STONEWARE CRAFTSMANSHIP: Boasting artisanal effects and color variations in its handcrafted make, Corelle's stoneware pieces are made from top-quality materials. These travel mugs are great for yogurts, soups, smoothies, coffee and moreCONVENIENCE IN A DISH: These stoneware travel mugs are great for all settings. Tumblers come with non-toxic silicone lids and sleeves that help keep their content safe from spills. They're also microwave, oven, freezer and dishwasher safe.ARTISAN DESIGN: More than tools, Corelle stoneware pieces are a reflection of our creative yearnings. This Oatmeal style showcases a solid glaze with a warm beige tone reminiscent of life in the summer fields.LIMITED WARRANTY: This item has a 1-year limited warranty.TIMELESS BEAUTY: Corelle Dinnerware are a staple of modern eating for everyday occasions, filling hearts and tables since 1970.