Come and see our amazing products. The wine tumbler is 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.Its double-wall vacuum insulation technology keeps your beverages fresh whether it is hot or cold drink inside. Set off on your refreshing picnic,hiking,camping, home or office with your water, drinks,wine or cocktail icy-cold for 7 hours or your coffee and tea scalding-hot for over 3 hours.Hand washing is recommended, electro-polished interior doesn't transfer flavor & no aftertaste. You don't have to worry about your morning or afternoon teas taste being ruined. Pls confirm with us about the packing info, stock color and exact production time before placing your order.