Redberry Vacuum Flasks

Insulation: These bottles use double-wall vacuum-insulated technology.Temperature Retention: They are designed to keep beverages hot for up to 12 hours and cold for up to 24 hours.Construction: Made from durable stainless steel with an inner copper coating for improved temperature performance.Design:Portability: Features a built-in handle for easy carrying during travel, work, or school.Cap System: Equipped with a screw-top cap that can often double as a small drinking cup.Aesthetics: Available in various ombre gradient colors, including blue, black, and pink combinations.