This goblet is made of fine polyresin and stainless steelPretty heavy-duty mug and the stainless steel keeps your drinks cooler longer, and it's easy to clean up.the stainless steel cup inside and around the top is one piece. Handwash only, machine wash is not recommended.What a terrific design If you are bold enough, you can use it as a cool beverage mug for milk,coco,coffee, beer, blood juice and so on; If you just like the design, you can use it as a knickknack to decor your room on Halloween, nice party trick cup .Specially designed grip, bringing you very special and weird touch feelings when griping it .Novelty mug gift for someone who loves skeletons and vikings,or someone who is big into skull and cross bones.Additional decoration in house, garden, office, hotel, restaurant or your favorite place, use for any occasion.