This Nightmare Before Christmas Jack Skellington Merry Christmas 20oz Custom Tumbler is the perfect addition to your holiday drinkware collection. Handmade by AKA Handcrafted Tumblers, this tumbler is made of high-quality stainless steel and includes a steel straw and cleaning brush. However, please note that this tumbler is not dishwasher or microwave safe and should be hand washed only. Also, be warned that hot liquids should not be put into the cup. Get into the holiday spirit with this custom tumbler featuring the iconic Jack Skellington.