Kupilka products combine the best of two worlds: wood and man-made materials. They are dishwasher safe, light weight, ecological and they won't burn your skin! This Mauri Kunnas special edition has a sympathetic spidey graphics. This size is great for children or strong coffee. - 1.2 dl volume (= 4 fl. oz US / 4.2 fl. oz UK / 120 ml = 0.12 l) - Made of Kareline natural fiber composite using ecologically produced energy - Contains 50% pine pulp and 50% plastic - Wash in natural waters on the go, and in a dishwasher at home Kupilka products are not microwave oven safe.