Boobspresso's are made from Stoneware clay. They are glazed and fired to a high temperature of 1200C.
This Boobspresso holds approximately 70ml and is 4.5cm X 4.5cm. (top one in photo)
They are food safe and dishwasher and microwave safe. However, to prolong the lifespan, hand washing is advised.
*Note, you may not receive the particular item in the image*