These versatile tumblers are great for an a morning espresso or an evening mescal. Each holds about 4 fl oz. I used chartreuse, mango and white clay and gently wedged them together to create the marbled effect. The interior and rim have a shiny white glaze, allowing them to hold water. Each piece is meticulously sanded so that it is smooth to the touch and evokes the feeling of sculpted stone. Since they are made by hand, each of these marbled pieces are unique. Food, microwave and dishwasher safe. Made to be used and admired. These pieces measures: 2.25" x 2.25" x 2.5