Come and see our amazing products. This production is made of 304 Stainless.It will keep drinks hot for up to approximately more than 12 hours and cold for up to approximately 8 hours.Your customers will love the look of these iridescent vacuum bottles.It is also BPA-free and include a screen printed or laser engraved imprint of your choosing. Pls confirm with us about the packing info, stock color and exact production time before placing your order.