This vacuum-insulated flask can be used for both hot and cold beverages and will retain the temperature for at least 12 hours. Available in an ergonomic shape and design, you can carry your favourite drinks around wherever you go. Double wall Vacuum Insulated: Double Vacuum insulated wall construction allows for hot tea's soup, coffee or other blends to remain consistently hot up to 8 Hours. Also cold water, smoothies, soft drinks or anuthing you may need very cold. 10 hours of insulated confidence. 18/8 Food Grade Stainless Steel: made from pure food grade, light weight durable 18-8 Stainless Steel. the purest from of material to house your liquids hot or cold. Will Not Sweat: The bottle will not ''Sweat meaning it will not create condensation which may have a high of liquid on your expensive buried walnut table. COLD: 10 Hours HOT: 8 Hours.