Made of good quality 18/10 stainless steel, BPA Free, lead free, durable and unbreakable. Covered by tough and durable coating, the tumbler surface is no scratch, the tumbler can be dishwashered safely and won't alter flavors or leach chemicals, but to protect the coating, hand-wash recommended. This stainless steel insulated travel cup is lightweight and portable to take on your outdoor adventures. 12 oz capacity can hold great for coffee, wine, tea, cocktails, champagne, beer and more.