Enjoy your favorite drinks anytime, anywhere with this Insulated Travel Coffee Mug made from premium food grade stainless steel available in two convenient sizes 380ml and 510ml and seven stylish colors Pink Red White Blue Black Army Green and Fruit Green The vacuum insulated double wall design keeps beverages hot and cold for 4 to 6 hours making it perfect for coffee tea water or chilled drinks The leakproof flip lid prevents spills while the non slip protective cover ensures a comfortable grip making it ideal for office school travel or outdoor use About insulation time The insulation duration is measured from the moment you pour your beverage at its original temperature into the mug For example if you pour hot water at 95�C the mug will keep it warm for around 4 to 6 hours depending on the environment Similarly chilled drinks will stay cool for up to 6 hours How to improve insulation performance Pre heat or pre chill the mug with hot water or ice water for 2 to 3 minutes before filling Close the lid tightly to prevent heat or cold loss Keep the mug full as a fuller mug retains temperature longer than a half filled one Avoid frequent opening of the lid as it releases heat or cold This insulated coffee mug is durable reusable BPA free and eco friendly offering you the perfect balance of style and performance for everyday use