Metal Coffee & Tea Cup Mug with Handle. The mug is made of stainless steel. When interacting with food, stainless steel does not form compounds harmful to the human body. Stainless steel utensils are most in demand, as, in addition to high performance, is an excellent example of the combination of elegance of form and convenience. Such dishes are indispensable for hiking and picnics: durable and compact, easy to clean.