The tumbler is made with a speckled stoneware clay. Wish i could call it a glass. Its coated in glaze, which is glass. The exterior is coated with a blue gloss glaze. The interior had a gloss rutile glaze poured in and back out after a sufficient coating..

The tumbler is 4-5/8 inches tall and 3-3/8 inches in diameter. It weighs 11oz without packing and holds 13 liquid ozs.