From our gal Em:
"Slip cast porcelain tumbler, holds 16+ fluid ounces.
Simple and pleasure–full & ready for a beverage!
Materials: porcelain casting slip, food-safe glaze & positive vibrations
Dimensions: 6.5″ Tall x 3.5″ Wide
Care: please take heed in washing. A hand wash is the gentlest way to treat porcelain and will naturally deepen your connection with each cup through the bathing and drying process. I always say “hand made? Hand wash!”