American Made Stoneware Pottery Wide Base Mug, Blue Wren Wood Ash Color With a 24 ounce volume, this handsome mug features a wide bottom base to prevent spills Built from durable stoneware clay, the mug features a chocolate-brown wood ash glaze accented in blue-wren color Mug is high fired for a permanent finish that is lead-free, microwave safe, and dishwasher safe Handmade in the USA 4.75-inches high