These beautiful hand thrown mugs are made from rich red stoneware and hand trimmed and handled. Each one will be unique and slightly different then the others. Patterns will very slightly but sizes will stay roughly the same. -Dishwasher Safe -Microwave Safe - approx. 4"x 3.5" Variations inherent in the handmade process are to be expected. Slight differences in size, shape and color are not considered flaws. If purchasing a pair of items consider them sisters not twins!