A Kupilka mug is durable and ecological, can be machine washed, and won't burn your fingers! This special edition is a part of the Mauri Kunnas lineup, and boasts a picture of the little spider you often saw in his children's books. - 300 ml volume - Made of Kareline natural fiber composite, using sustainable energy - 50% pine pulp fiber, 50% plastic - Wash on the go like you would a wooden cup, and in a washing machine at home if you wish - Measurements 116mm x 82mm x 82mm Kupilka products are not microwave oven safe. They are food grade items when used with cold and hot drinks and foods. The appearance of Kupilka products is created by industrial designer Heikki Koivurova, whose style combines an earthy attitude with beautiful yet practical design. Kupilka products meet the following requirements for materials and articles intended to come into contact with food: the general and traceability requirements of Regulation (EC) No. 1935/2004, Regulation (EU) No. 10/2011, Regulation (