Come and see our amazing products. Designed with double-walled and made from high quality food grade 18/8 stainless steel to keep your drink icy for up to 24 hours, and hot for up to 12 hours. Made of food-grade 18/8 stainless steel, the water flask is preservative, anti-oxidation and extended lifespan. Vacuum sealed area reduces the transfer of temperature to have thermal insulation. Pls confirm with us about the packing info, stock color and exact production time before placing your order.