Plant an acorn in your garden and take a cup of coffee outside to check on it each morning in this Oak & Acorn Mug… mighty oaks from little acorns grow. Dishwasher safe. Liquid detergent recommended to maintain appearance. Not recommended for use in the microwave. Earthenware pottery can sometimes get hot in the microwave, so we recommend you don’t put Emma Bridgewater pottery in the microwave. Not oven safe. Our pottery is not oven safe unless marked as cookware. H 7.2cm X W 10.3cm X D 7.3cm, 175ml