Robust and safe: The inner cup is made of 304 stainless steel, the outer part of the cup is made of high quality resin. Food grade, non-toxic, safe, durable and hygienic. Unique Design: Creative viking skull design, perfect medieval gift and skull collection, the best gift for friends and family, this skull mug is the perfect choice for Halloween and other festivals. Good collection This skull cup is not only a drinking vessel, but also a good decoration for the bar. Sometimes it is a unique pen holder. Hand-painting: Since each piece is individually hand-painted and polished, the color may differ slightly from the pictures. Warm and cold Available for hot and cold water, perfect for beer and coffee. Of course it's a nice mug for milk and juice.