Stelton THEO mug with coaster stoneware matt black The tea mugs from the THEO series by stelton have a calming effect on the eyes and soul and, like the teapot, have the same simple, stylish and Scandinavian design. The stoneware mug in a beautiful matt black version. The associated coaster made of bamboo has a warm look, made from sustainable Asian bamboo. This makes tea rings on the table a thing of the past. The tea mug that goes with the THEO teapot cleverly combines Scandinavian design with Asian tea culture. Enjoy a moment of relaxation with your favorite tea.