These gorgeous mugs are altered on the wheel by hand and each cup is thrown from 300grams of iron rich stoneware clay and fired to cone 10 - 1282c. They are light in weight and they feel amazing in the hand. Glazed in copper rich green stoneware glaze which shows the iron rich clay beneath, the glaze breaks gently on the rim, every cup is completely made & glazed by hand so each cup although very similar to each other will have slight variations in glaze finish and dimensions. All of the ceramics I produce are made from sturdy stoneware and all items are dishwasher safe and food safe. I would urge you to wash all of your hand made ceramics by hand. Although I make my ceramics to be used everyday, dishwashers can be a very harsh environment for your treasured ceramics. You can find out a little more about how to look after your hand made ceramics by looking over our care instructions. Height 10cm Width 9.5 Capacity 300ml / 10oz