Come and see our amazing products. The copper-lined stainless steel tumbler is a BPA-free, vacuum insulated stainless steel double wall tumbler. and keeps beverages hot for up to 8 hours and cold for up to 18 hours. The spill-resistant slide closure lid with a rubber gasket. This makes a great employee gift, trade show giveaway, this makes a great advertising piece for colleges, booster clubs, customer thanks, and so much more. Pls confirm with us about the packing info, stock color and exact production time before placing your order.