The Duke Bottle is a high-quality, double-wall 18/8 grade stainless steel bottle with vacuum insulation. Its inner wall is plated with copper for exceptional conductivity, allowing it to keep your drinks hot for up to 12 hours and cold for up to 48 hours. With a volume capacity of 500 ml, this bottle is perfect for staying hydrated on the go. Additionally, it comes presented in an Avenue gift box, making it an ideal gift option. What sets the Duke Bottle apart is its ability to be personalized, allowing you to add a personal touch and make it truly unique.