All dinnerware and serving pieces are made from stoneware, thrown on the wheel and then I pull the handles. Customers tell me that they love the thin lip, the handle size and the colors! It’s hard to choose! The mugs hold between 10 oz -16 0z. The smallest one’s hold approx. 10oz. They are 3 3/4” H X 3 1/4” W, 4 1/4 H X 3 1/4” W holds 12oz. The 4 3/4”x 3.5”, which are my standard size holds 14-16 oz. All are dishwasher safe, microwave safe and a pleasure to hold:)